Statistics: Interpreting Graphs and Charts

Ten students each attempted 10 free throws. This list shows how many free throws each student made. What is the IQR (interquartile range)?

• 8

• 5

• 3

• 13

Jada asked some students at her school how many hours they spent watching television last week, to the nearest hour. Here is a histogram for the data she collected. About how many students did Jada ask?

• 30

• 40

• 100

• 15

Eva asked ten of her friends how many birthday cards they got for their most recent birthday. The responses were as follows: 3, 2, 1, 0, 3, 4, 2, 1, 0, 1

What is the median?

Eva asked ten of her friends how many birthday cards they got for their most recent birthday. The responses were as follows: 3, 2, 1, 0, 3, 4, 2, 1, 0, 1

What is the mode?

Eva asked ten of her friends how many birthday cards they got for their most recent birthday. The responses were as follows: 3, 2, 1, 0, 3, 4, 2, 1, 0, 1

What is the range?

Karly collected data about the number of hours students spend on the internet each week. She determined the five-number summary to be: 0.5 ~ 4 ~ 6 ~ 7.5 ~ 11 Which of the following statements are true? Choose all that apply.

• 50% of the people watched between 4 and 7.5 hours of TV.

• Nobody watched more than 11 hours.

• 75% of the people watched at least 4 hours of TV.

• The range of the data is 3.5 hours.

• Half of the people watched more than 6 hours.

Which interval represents the greatest number of songs

• 2.5 - 2.99

• 3 - 3.49

• 3.5 - 3.99

• 4 - 4.49

How many songs are less than 3.5 minutes long?

• 1

• 3

• 4

• 10

The stem and leaf plot represents which of the following data?

• 13 17 10 21 24 32 27 11

• 11 21 24 10 27 13 32

• 0 1 3 7 1 4 7 2

• 17 13 17 32 27 1 24 21

What is the range of the data?

• 10 - 32

• 2

• 19

• 22