Statistics Review

What is the highest score in the class?

• 88%

• 100%

• 13

• 98%

Which phone provider represents the mode of the data?

• AT&T

• Sprint

• Verizon

• T-Mobile

Find the mean of these numbers:

2, 57, 38, 42, 6

• 29

• 38

• 50

• 145

Find the Median of the data set

• 77

• 99

• 80

• 78.5

The range is the difference between the greatest and the least data values.

• True

• False

In order to find the median, the data must be sorted from least to greatest first.

• True

• False

Given the data: 136, 150, 119, 150, 125, 140.

Find the upper quartile (Q3). (Hint... put the numbers in order and find the median to help you find Q3)

• 125

• 150

• 139.5

• 143

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

• 13

• 7

• 9

• 6

Find the IQR (Q3 - Q1) of the data

20, 22, 25, 29, 31

• 30

• 21

• 25

• 9

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number

• Add the two numbers in the middle & then divide by two.

• They are both the median

• None of the above