Definitions
Examples
Word Problems
Formulas
100
How to find Mean?
The sum of the data divided by the number of data
100
Find the mean:
10, 12, 19, 15, 30
17.2
100
In a math class, the lowest test score was 78 and the highest was 99. What is the range?
21
100
What is the formula of range?
Range = Max - min
200
Define the Median.
the Middle value
200
Find the median:
1, 8, 12, 4, 7, 4, 5
8
200
In a zoo, we want to know the average weight of the penguins. Here are their weights: 70, 90, 64, 49, 82. What is the average.
71
200
What is the formula for the mean?
Mean = sum of terms/number of terms
300
What does IQR stand for?
Interquartile range
300
Find the Mode:
1, 9, 8 ,7, 4, 10, 16, 19, 4, 3, 7, 4
4
300
In a sixth grade class, we want to know the age seen the most. Here are the ages of one class: 12, 11, 12, 12, 12, 11, 12, 11, 11, 11, 12
12
300
What is the formula of mode?
the most seen number
400
Define the range.
the difference between the largest and smallest number
400
Find the Range:
43, 10, 8, 15, 40, 30, 9
35
400
A teacher wants to know the average of three students in her class. If sally scored an 89, Roger scored a 90, and Sam scored a 69. What is the average.
82.66
400
What is the IQR formula?
IQR = Q3 - Q1
500
how to find mid point of a class interval?
Add the lower and upper boundaries then divided by 2
500
Find the mean, range, and mode:
4, 9, 15, 16, 19, 20, 15
Mean - 14
Range - 16
Mode - 15
500
Mrs. Roberson needs some help. Her students have been struggling and she wants to know the range from test to test. She has given us the averages for each test. On test one, they scored an average of 85, on test two an 83, and on test three a 79. What is the range between the tests?
6
500
What is the formula of the Standard Deviation?
we will not be using this in class, I just want you to see it.