range

Range

the positive difference between the largest and smallest values in a data set

Eg.

range of 4,8,5,6,9,1,3,5,8,6 is

1,3,4,5,5,6,6,8,8,9

9-1 = 8

mode

Mode

The most frequently occurring number in a
set of data

mode and most both have 4 letters

Eg.

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

mode of 2,2,4,6,6,8,11 is 2 and 6

Median

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

Mean

Mean

A measure of central tendency

the sum of a set of values divided by the number of

values in the set

mean of 6,4,8 is

add up all the numbers and divide the results by how many numbers there are

6+4+8=18

18 divide it by 3 = 6

therefor the mean is 6

divisibility rules

1-all number
2-even numbers
3-sum is 3
4-divisible by 2 twice
5-end in 0 or 5
6-divisible by 2 or 3
8-divisible by 2 trice
9-end in 0

theoretical probability

Theoretical Probability- the expected probability of an event occurring.

BEDMAS

B=Brackets
E=Exponents
D=Division
M=Multiplication

A=Addition
S= Subtraction

divisibility rules

1-all number
2-even numbers
3-sum is 3
4-divisible by 2 twice
5-end in 0 or 5
6-divisible by 2 or 3
8-divisible by 2 trice
9-end in 0

integers

Negative integer are below 0 and positive integers are above 0.

eg

coordinate grid

every coordinate must go on a quadrant.
eg

lines

Lines

parallel lines-lines in the same plane that cross or intersect



intersecting-lines in the same plane that meet or cross

perpendicular-line in the same plane that intersect at 90 degree angle.

Range

the positive difference between the largest and smallest values in a data set

Eg.

range of 4,8,5,6,9,1,3,5,8,6 is

1,3,4,5,5,6,6,8,8,9

9-1 = 8

Mean

A measure of central tendency

the sum of a set of values divided by the number of

values in the set

mean of 6,4,8 is

add up all the numbers and divide the results by how many numbers there are

6+4+8=18

18 divide it by 3 = 6

therefor the mean is 6

Mode

The most frequently occurring number in a
set of data

mode and most both have 4 letters

Eg.

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

mode of 2,2,4,6,6,8,11 is 2 and 6

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

Measures of Central Tendency

a value that represents the central of a data set

can be the mean,or mode

data set is a group of numbers that you MUST arrange in
order from least to greatest

Eg.

2,3,4,5,6,5,4,5,3,4,5,6,7,5,34,3

2,3,3,3,4,4,4,5,5,5,6,6,7,34

Circle Formulas

c= πd


c=2π r


d =2r


A=π R2 


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

Quadrant

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

2 types of Probabilty

Experimental probability- actually doing the trails.
Theoretical probability- what you expect to happen.
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Mean,Median,Mode,Range,and Outlier

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 value that shows up the most.
RANGE- positive difference between largest and smallest value.
OUTLIER- values that are too big or too small compare to the other values.