Data Displays and Distributions

Which of the following questions is statistical?

• How many hours did you sleep

  last night?

• How many hours did the students

  in your class sleep last night?

• How many hours did your friend

  spend reading last night?

• How many hours did your teacher

  spend reading on Saturday?

Which statement best describes the

question “How many computer games

does Christopher have right now?”

• This question is statistical because

  it does not involve a data set with

  items that vary.

• This question is statistical because

  there is variation in the resulting

  data set.

• This is not a statistical question

  because it does not involve a data

  set with items that vary.

• This is not a statistical question

  because there is variation in the

  resulting data set.

Nancy wants to know more about the

music her friends listen to. Which of

her questions below is NOT a

statistical question?

• If I make a list of musical styles,

  how many of my friends like

  each style?

• How many songs does each of my

  friends have?

• What is my best friend’s

  favorite song?

• How many songs does each of my

  friends buy in one month?

The test scores for a class are shown.

79, 80, 92, 92, 81, 100, 88, 98, 71, 100, 91, 90

What is the mean test score?

• 71

• 88.5

• 90.5

• 92

Find the interquartile range of the

data displayed in the box plot shown.

• 9

• 7

• 6

• 3

What is the median of the data

set shown?

34, 86, 12, 56, 21, 98, 72, 34, 21, 34, 45, 23, 97, 44

• 34

• 39

• 44

• 53

What is the median of the data?

• 1

• 2

• 3

• 4

Which of the following statements accurately describes the data displayed in the dot plot shown?

Select ALL the correct statements.

• The minimum of the data is 1.

• The maximum of the data is 8.

• The distribution is symmetric.

• The mean is approximately 5.4.

• The median is 6.

Gianna is keeping track of how much money she spends each week:

$75, $123, $36, $86, $57, $89, $41, $70, $148, $80

What is the median of the data?

(a)  

The chart shows the number of prizes at nine different booths at the school’s fall festival.

What is the lower quartile of the data?

• 4

• 5

• 10

• 18