Unit 1 CBA Review (Statistics)

Is the following a statistical question?

How much time do sixth graders spend on homework each day?

• Yes

• No

Is the following a statistical question?

When is your mother's birthday?

• Yes

• No

Stitches went shopping and bought five shirts that cost $8, $34, $21, $27, $15. What is the mean cost of the shirts?

• $8

• $34

• $21

• $27

What is the median?

79, 83, 59, 54, 72, 68, 71, 64, 64

• 18

• 72

• 68

• 60

According to the newspaper, how many of the moviegoers were under the age of 20?

• 7

• 10

• 13

• 23

The interquartile range of Mrs. D'Urso's box plot is

• 5

• 7

• 10

• 16

Sophie and Julie are on the same 6th-grade basketball team. Here are the number of points scored during each of the last ten games, the players’ means and mean absolute deviations (MAD).

Which student is more consistent?

• Sophie because her mean is the smallest

• Sophie because her MAD is the smallest

• Julie because her mean is the biggest

• Julie because her MAD is the biggest

Mr. Adamson has 10 students in his math class. The line plot shows the number of hours students spent doing homework last week.

The median amount of time students spent on homework was

• 3

• 3.5

• 4

• 4.5

The box plot shows the prices of different bicycles in a store.

According to the box plot, the median price of a bicycle at the store is

• $225

• $300

• $350

• $400

The box plot shows the prices of different bicycles in a store.

According to the box plot, the range price of a bicycle at the store is

• $150

• $200

• $275

• $500