Thursday, June 14, 2012

Circle Graphs

-Sectors of circle graphs are made from central angles

-If the sector covers 25% of the graph, the central angle is 25% of 360 (degrees) . Which is 90 (degrees).

Circle Formulas

c = (pi) d

c = 2 (pi) r

d = 2r

A = (pi) r2 

Area is the measure of space a 2D shape covers. 

Divisibility Rules

0 = ends in zero
1 = all numbers
2 = even numbers
3 = sum of the digits is 3
4 = divisible by 2 twice
5 = ends in a 0 or 5
6 = divisible by 2 and 3
8 = divisible by 2 thrice
9 = sum of the digits is 9
10 = ends in 0

Integers

Integers 

Negative numbers represent values below
zero and positive numbers represent
values above zero

eg. above and below ground or sea level

1+ (-2) = (-1) is an addition statement

3 - (-1) = 4 is an subtraction statement

Intergers

Opposite integers have the same numeral
but different sing eg. 3 and (-3)

know what a (+) + (+) =       (+) - (+) =
                     (-) + (-) =        (-) - (-) =
                     (+) + (-) =       (+) - (-) =
                     (-) + (+) =       (-) - (+) =
                     

Divisibility

Definition:


Divisible-  Means when a number can be divided by another number, with no remainder or decimal.


(It's a whole number.)

Probability


DEFINITIONS


Experimental probability:  Actually doing the trails


Theoretical probability:  what you expect to happen

exam review 2012

A spread sheet organizes data in
columns and rows.

Know the ratio of circumference to
diameter of any circle is always the same.

Circumference divided by diameter is pi
3.14

exam review 2012

Variable is an unknown number

expression contains variables,
operations, and numbers, in any 
combination. 

Practice finding the pattern 
eg. 24, 21, 18, 15... 
and write equations for the patterns 
eg. 27-3n

Transformations / Measure of Central Tendency

Translation - Slide along a straight line
Rotation - turn about a fixed point
Reflection - mirror image
_____________________________________________________________________________

Median - the middle number in a set of data after data have been arranged in order
Mode - the most frequently occurring number in a set of data
Mean - the sum of a set of values divided by the number of values in a set
Range - the positive difference between the largest and smallest values in a data set
Outlier - a value that is much larger or smaller than the other data value

Exam review

Exam review: Ordered Pairs and Linear Relation 

 Plot ordered pairs and determine whether or not they make a pattern.

 Determine the linear relation (equation) from a group or table of values

Remember for the Exams: Converting Percents, Decimals, and Fractions

Percent: Is always out of 100
Decimals: Is always over 1
Fractions: Is always whole number over whole number.



How to Make a Perpendicular Bisector

Step 1: Open compass to just over half way of the line.
Step 2: Sharp point at point A, make an arc.
Step 3: Sharp point at point B, make an arc.
Step 4: with a ruler, join the intersections of the arc.


And you should end up with something that looks just like this:

Remember for the Exam: Geometry


Exam Review

A spread sheet organizes data in columns and rows.

Know the ratio of circumference to diameter of any circle is always the same.

Circumference divided by diameter is pi 3.14

Must remember:
Circle Formulas:
C= πd       D= 2r
C= 2πr       A= πr2


Area is the measure of space a two dimensional shape covers.


Sectors of circle graphs are made from central angles.


Integers


Negative numbers represent values below zero and positive numbers represents values above zero. 


eg. above and below ground or sea level
1+(-2)= (-1) is an addition statement
3-(-1)= 4 is a subtraction statement


Opposite integers have the same numeral but different sign.
eg. 3 and (-3)


Know what a (+) + (+)=      (+) - (+)= 
            (-) + (-)=         (-) - (-)=
            (+) + (-)=        (+) - (-)=
            (-) + (+)=        (-) - (+)=


Practice with different numerals in each situation.

Good luck everyone! 

exam review

Divisibility rules

0- end in zero
1-all numbers
2-even numbers
3-sum of the digits in 3
4-divisible by 2 twice
5-ends in 0 or 5
6-divisible by 2 and 3
8- divisible by 2 thrice
9-sum of the digits is 9
10-ends in 0

exam review

Measure of Central Tendency

Measure of Central Tendency) A value that represents a data set.


(A data set is a group of numbers that you arrange in order from least to greatest.)


exam review

Transformations

Translation- slide along a straight line 
Rotation- turn about a fixed point 
Reflection - a mirror image
 

Remember for the Exam: Measure of Central Tendency

Measure of Central Tendency) A value that represents the centre of a data set.


(A data set is a group of numbers that you must arrange in order from least to greatest.)


Mean) The sum of a set of values divided by the number of values in the set.
Median) The middle number in a set of data after that data set has been arranged in order.
Mode) The most frequently occurring number in a set of data.


Range) The positive difference between the largest and smallest values in data.
Outlier) Value that is larger or smaller than the other data value. 
The data set might have more than one outlier or zero outliers.

exam review

Variables Expressions Ordered Pairs and Linear Relation

Variable- is an unknown number.

Expression- contains variables, operations and numbers in any combination.

Plot ordered- pairs and determine whether or not they make a pattern.

Determine- the linear relation (equation) from a group or table of values.

exam review

I f they have $500 how much do they spend on rent

Milton family
food 35%
music 21%
clothes 15%
savings 6%
rent 25%
answer is $125

Variables, Expressions, Ordered Pairs and Linear Relation

Variable is an unknown number.

Expression contains variables, operations and numbers in any combination.

Plot ordered pairs and determine whether or not they make a pattern.

Determine the linear relation (equation) from a group or table of values.

exam review

divisible- means when a number can be divided by another number with no remainder or decimal

its a whole number

exam review

experiment probability- actually doing the trails

theoretical probability- what you expect to happen

Math Review

Variable
A variable is a unknown number
A express contains variables, numbers and operations in any order

exam review

probability -like a event occurring
probability- can be expressed ( said or written) using fractions, ratios and percents
outcome- one possible result of a probability experiment
favorable outcome- a successful result in a probability experiment
p (outcome)- is a short for saying something happening

Circumference, Area and Sectors

Exam Review
Know the ratio of the circumference to diameter of any circles always the same. 

Circumference divided by the diameter = 3.14

Area is the measure of space a 2 dimensional shape covers.

Sectors of circle graphs are made from central angles.

If the sector covers 25% of the graph the central angle is 25% of 360 degrees which is 90 degrees.

Math Review

The three Transformations
Translation- slide along a straight line
Rotation- Turn about a fixed point
Reflection- Just a mirror image

Divisible

Divisible means when a number can be divided by another number it has to be a whole number

Math Review

Divisibility rule for 9
The rule for 9 is if it has a sum of 9 you got it

Math Review

Divisibility rules 6 & 8
The rule for 6 is it has to be divisible by 2 & 3 
The rule for 8 is it has to be divided by 2 three times 

An Independent Event and a Sample Space

Independent Event - The outcome of 1 event has no effect on the outcome of another event.

Sample Space- All possible outcomes of an experiment.

Math Review

Divisibility rules 4 & 5
The rule for 4 is divide the number by 2 twice with no remainders
Rule for 5 is if it ends with 0 or 5

Math Review

Divisibility rules for 2 & 3


All number that end in a even number is for 2 
All numbers that are in the group of 3 is for 3

Exam notes

Independent event
-The outcome of one event has no effect on the outcome of another event.
Ex. Flipping a coin, Rollin a die

Sample space
- all possible outcomes of an experiment.
Ex. Heads or Tails (coin)

How to find area of a triangle

First you get the base and the height and you divide it by two and you get your area.
B x H and then divide it by two.

Number Lines

Number lines are help ways to figure out integer questions.
   -1-2-3-4        1 2 3 4
<--------0-------> 
             ----->
               +2
The answer is +2

exam review

Number Coefficent: is a number that multiplies the variables.

Variable: is a letter that represents an unknown number.
 Expression: is any single number or variable combination of operation ( -, +, x, ./.) involving a number.
Dont forget to STUDY for exams everybody!!!

Good luck -kyler

 Exam review:Formulas

C=πd  used to measure the circumference of a circle 
C=2πr twice the radius is the diameter 
A=πr2  used to measure the area
d=2r  used to measure the diameter

Study 

exam review:

1/2= 0.5 =50%
0.75=3/4 =   75%
80% = 4/5 =   0.8

Exam review!

Independent event
-The outcome of one event has no effect on the outcome of another event.
Eg. Flipping a coin, Rollin a die

Sample space
- all possible outcomes of an experiment.
Eg. Heads or Tails (coin)

Number Coefficient:

A Number Coefficent is a number that multiplies the variables.

Variable:

A Variable is a letter that represents an unknown number.
 Expression:

An Expression is any single number or variable combination of operation ( -, +, x, ./.) involving a number.
 Math review:
Constant - a number that does not change and it increases or decreases the value of an expression

Measures of Central Tendency

                                                  Measure of Central Tendency
Mean - Add up all values divided by how many values there are (the average of the set)

Median - The middle number in a set of ordered values, but might be the mean of two middle values

Mode - The value that shows up the most

Range - possitive difference between the largest and smaller values

Outliers - values that are too big or too small compared to the other values
Math Notes:

Random- An event in which every outcome has an equal chance of happening.

eg. Flipping a coin, Rolling a standard die, drawing a card from a deck of cards
Exam review:
Experimental probability: The probability of an event occurring based on experimental results

Theoretical probability: The expected probability of an event occurring *STUDY*

Exam notes:

Range: the positive difference, the largest and smallest in a data set

Outlier: A value that is much larger or smaller than the other data value,the data set may have more than 1 outlier or zero outliers

How to make an Angle Bisector

                                              How to make an Angle Bisector
Step 1: You must have an angle

Step 2: Place your compass point at the angle vertex and make an arc through both arms

Step 3: Repeat step 2 on the other arm

Step 4: Then draw a line from arc intersection to angle bisector using a ruler


These are the steps you need to know on how to make an Angle Bisector

BEDMAS

Brackets

Exponents 

Division

Multiplcation

Addition

Subtraction

-BEDMAS  
EXAM NOTES 
  

How to make a Perpendicular Bisector

How to make a Perpendicular Bisector
Step 1: You must have a line segment eg. a__________b

Step 2: Open your compass just over half way of the line segment

Step 3: Put the sharp point on "a" and make an arc (semi-circle)

Step 4: Put the sharp point on "b" and make another arc (semi-circle)

Step 5: Use a ruler to join the 2 intersections of the arcs


And this is what you need to know on how to make a perpendicual bisector
Exam Notes:

Median: the middle number in a set of data after the data, have been arranged in order

Mode: The most frequently occurring number in a set of data

Mean: A measure of central tendency. The sum of a set of values divided by the number of value in a set.

 

Exam review Quadrants

Exam Review: quadrants
(+,+) quadrant I
(-,+) quadrant II
(-,-) quadrant III
(+,-) quadrant IV
Exam Notes:

Rotation, Transformation and Reflection 

Rotation: to rotate a shape on a grid
Transformation: to move a shape on a strait line on a grid
Reflection : to make a mirror image
Exam review: Measures of central tendency

-A value that repesents the center of a data set
- Can be the Mean, Median, or Mode
-Data set is a group of numbers that you must arrange from least to greatest

exam notes

1 = 0.5 50%
2

0.75 = 3   75%
           4

80% =   4     0.8
              5
 



geometery

Perpendicular bisector: A line that bisects a diffrent line segment into an equal pattern\
Perpendicular:2 lines that meet at a 90 degree angle 
Intersecting: two lines that cross at any point

exams notes

1  =
2

0.75 =

80% =

Rotation, Transformation and Reflection

rotation: to rotate a shape on a grid
Transformation: to move a shape on a strait line on a grid
Reflectio : to make a mirror image

Quadrants

There are 4 Quadrants on a plane.

Q1 - (+,+)

Q2 - (-, +)

Q3 - (-,-)

Q4 - (+,-)
(+,+)quadrant 1
(-,+)quadrant 2
(-,-)quadrant 3
(+,-)quadrant 4
Describe the horizontal and vertical
movements between two poins 2 units right
eg.72 units right,and 3 units left

Exam review

Make sure you know how to plot points on a coordinate paper.

Must remember:
(+, +) quadrant 1
(-, +) quadtrant 11
(-, -) quadrant 111
(+, -) quadrant 1111

Adding, subtracting, multiplying, and dividing decimal numbers using a calculator

try this: 
1) 21.34+32.56+1.09=
2) 675.42-324.78=
3) 23.78x5.06= 
4) 678.987/8.17=


answers:
1) 54.99
2) 350.64
3) 120. 2762
4) 119. 8270502

Divisibility Rules


0- end in zero


1- all numbers


2even numbers


3- sum of the digits in 3


4- divisible by 2 twice


5- ends in 0 or 5


6- divisible by 2 and 3


8- divisible by 2 thrice


9- sum of the digits is 9


10- ends in 0




exam review

1\2 = 0.5, 50%
0.75 = 3\4, 75%
80% = 4\5, 0.8
Transformatons
translation slide- slide along a straight line
rotation- turn around a fixed point
reflection- mirror image

exams notes

convert fractions decimals and percent.

a    a    a
b   1    100

exam review

1/2= 0.5 50%
0.75=3/4    75%
80% = 4/5    0.8

Geometry - Bisectors / Angles

Geometry - Besectors / Angles
Bi- Two        Sect- cut
Bisect - is to cut into two equal parts

Perpendicular Bisector - a line that divides another line segment in half and meets at right angles

Angle Bisector - a line that divides an angle into two equal parts (equal angles are marked with the same symbol)

Acute Angle - angles that are less than 90 degrees

Obtuse Angle - angles that are greater than 90 degrees

These are some things that will help you remember what bisectors and angles are.

probibility

You get all favoritable outcomes and divide it by all possible outcomes
ex. heads and tails on a coin. you have a 50% chance to get heads
1 out of two

Formulas Of Circles

Formulas Of Circle

C=πd this is used to measure the circumference of a circle 
C=2πr twice the radius is the diameter 
A=πr2 this is used to measure the area
d=2r this is used to measure the diameter

Exam review: Divisiblilty rules

Exam review post:
Divisiblity rules 1-10
Rule for 1 :  All whole numbers divisble by 1
Rule for 2: All even numbers
Rule for 3: The sum of the digits divisible by 3
Rule for 4: divisible by 2 thrice(Three times)
Rule for 5: All numbers that end in 5 or 0
Rule for 6: Divisble by 2 and 3
Rule for 7 : divisble by 2 thrice
Rule for 8:All numbers Divisble by 2
Rule for 9: Sum of the digits is nine
Rule for 10: ends in 0
BEDMAS

B- brackets
E-exponents
D-division
M-multiplication
A-addition
S-subtraction

exam review

variable is an unknown number

- expression contains varibles, operations and numbers , in any combination

practice finding patteren
eg. 24, 21, 18, 15...
and write equations for the patterens
eg. 27-3n

exam notes

adding subtracting multiplying and dividing
decimal numvers using a calculator.

21.34 + 32.56 + 1.09 =

675.42 - 324.78 =

23.79 x 5.06 =

678,987 / 8.17 =
Brackets
Exponents
Division
Multiplication
Adding
S
All Quadrants

(+,+) Quadrant 1
(-,+) Quadrant two
(-,-) Quadrant three
(+,-) Quadrant four

Review: Mean, Median, Mode, Range, Outlier,

Mean:
-add up all the values , divide by how many numbers there are
 Median:
-the middle number in a data set
Mode:
-the value that shows up the most
Range:
-the positive difference between largest and smallest values
Outlier:
-values that are too big or smallest
values

Quadrants

(+,+) quadrant I
(-,+) quadrant II
(-,-) quadrant III
(+,-) quadrant IV



Quadrants

  
( +,+) Quandrant I
(- , +) Quandrant II
(- , -) Quandrant III
(+ , -) Quandrat IV
Divisibility rule
1-all number
2-even number
3-sum of the digits is divisble by 3
4-divisible by 2 twice
5-ends in a 0 or 5
6- divisible by 2 and 3
7-divisible by 2 thrice
9-sum of the digits is 9
10-end in 0

Measures of Central Tendency definitions

Data Set - A group of numbers that you must rearrange in order from least to greatest.

Median - The middle number in a set of data after the data set has been arranged in order

Mode - The most frequently occuring number in a set of data

Mean - The sum of a set of values divided by the amount of values in the set

Range - The positive difference between the smallest and the greatest number in a data set

Outlier - A value that is much bigger or smaller than the other data values.


Exam notes

Translation- slide along a  straight line

Rotation- turn about fixed point

Reflection- mirror image

 Independent even- the outcome of one event has no effects on the outcome of another event
eg. flipping coin
-rolling a die

Sample space- all possible outcomes of an experiment
eg. heads or tails (coins)
1, 2, 3, 4, 5, 6 (die )

Random- an event in which every outcome has an equal chance of happening
eg. flipping a coin
- rolling a standard die
- drawing a card from a deck of cards

Theoretical Probability- the expected probability of an even occurring

Experimental Probability- the probability of an event occurring based on experimental results



                               
divisible means when a number can be divided by another number with no remainder or decimal

Divisibility rules
1- all numbers
2- even numbers
3- sum of the digits is divisible by three
4- divisible by two twice
5- ends in a zero or a five
6- divisible by two and three
8- divisible by two thrice
9- sum of all digits is equal to nine
10- ends in a zero

exam review

Intergers
- negative numbers repersent values below zero and positive numbers repersent values about zero
-eg. above and below ground sea level

eg. 1+ (-2) = (-1) is an addition statement
eg. 3 - (-1) = 4 is an subtraction statement

Review: Divisibility Rules

The Divisibility Rules: 
 0 - end in zero
1 - all numbers
 2 - all even numbers
 3 - sum of the digits is 3 
4 - divisible by 2 twice 
 5- ends in 0 or 5
6- divisible by 2 and 3 
7- nothing 
8- divisible by 2 thrice 
9- sum of the digits is 9
10- ends in
 


 (+,+) qaudrant 1
 (-,+) qaudrant 2
 (-,-) qaudrant 3
 (+,-) qaudrant 4


exam notes

(+,+) quadrant I
(-,+) quadrant II
(-,-) quadrant III
(+,-) quadrant IV

describe the horizontal vertical
movements between two points , 2 units right
and 3 nits left
Experimental Probability - actually doing the trails

Theoretical Probability - what you expect to happen

Integers

Positive integers have the same numeral value as a negative integers but have a different sign.
(+) + (+) = (+)
(-) + (-) = (-)
(-) + (+) = it depends which number value is higher
(+) + (-) = it depends which number value is higher
Experiment probability-actually doing the tials
theoretical probablity-what expect to happen

Remember for the Exam: BEDMAS



Brackets
Exponents 
Division
Multiplication

Addition
Subtraction

First you check for brackets then exponents
Then check for division or multiplication.
Last, check for addition or subtrction.
Opposite integers have the same numeral but different sign.

Example: 3 and (-3)

exam notes

transformations
translation - slide along a straight line
Rotation - turn about a fixed point
Reflection - mirror image

Know how to do and describe each them
Where does (1,-3) go on a
coordinate grid?

Review: Mean, Median, Mode, Range, Outlier

Mean:
-add up all the values , divide by how many numbers there are
 Median:
-the middle number in a data set
Mode:
-the value that shows up the most
Range:
-the positive difference between largest and smallest values
Outlier:
-values that are too big or smallest
values

exam review

Jim is one third his brothers age and his brother is12



                                    answer 12\3 = J
                                               
                                             
Experimental  probability - actually doing the trails

Theoretical probability - what you expect to happen

Geometry - Lines

Geometry - Lines
Parallel lines - are lines in the same plane that never cross or intersect

Intersecting - lines in the same plane that meet or cross eg. X L T <--- these letters cross or intersect

Perpendicular - lines in the same plane that insect at 90 degree angles L T <--- These letters have perpendicular angles

Line Segments - piece of a line with starting and end points eg.  a__________b

These are some definitions for you to know about basic geometry.
Divisble-means when a numbercan be divide by another number with no reminder
with no decimal (it is a whole number)

Review: Quadrants

(+,+) quadrant l
(-,+) quadrant II
(-,-) quadrant III
(+,-) quadrant IV

Mean- add  up all values divide by how many values there are
Median- the middle number is a set pf ordered values, might be the mean of two middle values
Mode the value that shows up the most
Range- positive difference between largest and smallest values
Outlier- values that are too big or too small compared to the other values
Divisible - means when a number can be divided by another number with no remainder or decimal. 

It is a whole number.

exam review

-mean-add up all values divided by how many values there are
-median-the middle number in a set of ordered values might be the mean of 2 middle values
-mode-the values that shows up the most
-range-positive diffrence betwwen largest and smallest values
-outlier- values that are big or too small compared to the other values

Mean, Median, Mode, Range, Outlier

Mean- Add up all values divide by how many values there are.

Median- The middle number is a set  of ordered values, might be the mean of 2 middle values.

Mode- The value that shows up the most.

Range- Positive difference between largest and smallest values.

Outlier- Values that are too big or small compared to the other values.

Review: Quadrants

(+,+) Quadrant 1
(-,+) Quadrant II
(-,-) Quadrant III
(+,-) Quadrant IV


Describe the horizontal and vertical movements between two points.

Mean, Median, Mode, Range, Outlier

Mean: add up all the values , divide by how many numbers there are.
Median: the middle number in a data set
Mode: the value that shows up the most
Range:the positive difference between largest and smallest values
Outlier:values that are too big or smallest
values

Review: Transformations

Translation - slide slon a straight line
Rotation - turn  about a fixed point 
Reflection - mirror image 
Divisibility Rules
0 - ends in zero
1 - all numbers
2 - even numbers
3 - sum of the digits is3
4 - divisible by 2, twice
5 - ends in a 0 or 5
6 - divisible by 2 and 3
8 - divisible by 2, thrice
9 - sum of the digits is 9
10 - ends in zero


MODE

Mode
- The number that shows up the MOST

Review: Transformations

Translation- slide along a straight line
Rotation- turn about a fixed point
Reflection- mirror image

Know how to do and describe each of them.


Exam reviews

Transformation-slides along a straight line
Rotation-turn about a fixed point
Reflection-mirror image

DIVISIBILITY RULES

Divisibility rules 
1. all numbers
2. all even numbers
3. the sum of the digits is divisible by 3
4. if the number is divisible by two twice
5. any number that ends in o or 5
6. if the number is divisible by 2 and 3 its divisible by six
8. if the number is divisible by 2 thrice 
9. if the sum of the numbers are divisible by 9
10. if number ends in 0
Transformations
Translations- slide along a fixed point
Rotation- turn about a fixed point
Reflection- mirror image


Transformations
Translation - to slid along a straight line
Rotations - to turn around a fixed point
Reflection - a mirror image

Review: Divisibility Rules

Divisible means when a number can be divided by another number,
With no remainders or decimals.
Divisibility rules
1- All numbers
2- Even numbers 
3- Sum of the digits is divisible by 3
4- Divisible by 2 Twice
5- Ends in a 0 or 5
6- Divisible by 2 And 3
8- Divisible bye 2 thrice (three times)
9- Sum of he digits is 9
10- ends in 0

Formulas Of Circles

C=πd this is used to measure the circumference of a circle 
C=2πr twice the radius is the diameter 
A=πr2 this is used to measure the area
d=2r this is used to measure the diameter

Wednesday, June 13, 2012

Divisibility/Divisible

Divisible means when a number can be divided by another number, 
With no remainders or decimals.

Divisibility rules
1- All numbers
2- Even numbers 
3- Sum of the digits is divisible by 3
4- Divisible by 2 Twice
5- Ends in a 0 or 5
6- Divisible by 2 And 3
8- Divisible bye 2 thrice (three times)
9- Sum of he digits is 9
10- ends in 0 

Circle Formulas:

C=πd this is used to measure the circumference of a circle 
C=2πr twice the radius is the diameter 
A=πr2 this is used to measure the area
d=2r this is used to measure the diameter 

Measure of Central Tendency

Measures of Central Tendency 
-a value that represents the centre of a data set
-can be the mean, median, or mode
-data set is a group of numbers that you must arrange in order from least to greatest.

eg.
2, 3, 4, 5, 6, 5, 4, 5, 3, 4, 5, 6, 7, 5, 3, 4, 3
 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5,6, 6, 7

Median- the middle number in a set of data after the data have been arranged in order

eg.
median of 2, 5, 6, 8, 9 is 6
median of 1, 3, 6, 8, 9, 10 is 7

Mode- the value that shows up the most
mode and most both have 4 letters

eg.
mode of 3, 5, 7, 7, 9 is 7

Range- positive difference between the largest and smallest values in a data

eg.
Range of - 1, 3, 4, 5, 5, 6, 6, 8, 8, 9
9-1=8

Outlier- a value that is much larger or smaller than the other data value
- the data set may have more than 1 outlier or zero outliers

eg.
outliers for 1, 67, 68, 67, 64, 65, 100, are 1 and 100 
outliers for 3, 8, 4, 5, 6, 33, 5, 6 are 3 and 33

Intersecting

2 lines that Intersect "Cross" at any point

Parallel Lines

2 lines on the same plane that NEVER meet, Same distance apart

Perpendicular

2 lines that meet at 90 degrees angle 

Exam notes: Bisect and Perpendicular

Bisect-- is to cut in the two equal parts
Bi- two
Sect-cut

Perpendicular bisector- a line that divides another line segment in half and meets at right angles.
-equal line segments are shown with hash marks. 

Exam Notes: Circle Formulas

  • Circumference: C=πd or C=π2r
  • Diameter: D=2r
  • Radius: R=d/2
  • Area: πr2

Measures of Central Tendency

A value that represents the centre of a data set.
Can be the mean, median, or mode
Data set is a group of number that you must arrange in order from least to greates.

Median- the middle number
mode-most
mean-average
range- start to the end
outlier-larger value

Exam Notes

-Perpendicular Bisector: line that bisects a different line segment into 2 equal parts.










-Perpendicular: 2 lines that intersect at a 90 degree angle.










-Parallel Lines: 2 lines on the same plane that never meet. (same distance apart)










-Intersecting: 2 lines that cross, 'intersect', at any point.










-Angle Bisector: dividing the angle into 2 equal parts. 
eg. 90 degrees divided into two is 45 degrees.
 

Exam Notes

Mean- Add up all values and divide it by how many values there are.

Median- The middle number in a set of ordered values, might be the mean of 2 middle values.

Mode- The value that shows up the most.

Range- Positive difference between largest and smallest values.

Outlier- Values that are too big or too small compared to the other values.

Eg.  18, 19, 79, 17, 20, 12

Mean = 12, 17, 18, 19, 20, 79
             12+17+18+19+20+79 =27.5
                             6

Median = 12, 17, 18, 19, 20, 79 =18.5


Mode = 12, 17, 18, 19, 20, 79 = No Mode


Range = 12, 17, 18, 19, 20, 79
              79+12=91


Outlier = 12, 17, 18, 19, 20, 79 = 79
                
Red = ordered from least to greatest
Blue = Answer