Ost Statistics

The number of children's movie tickets sold over a period of a week is shown below.
18, 23, 9, 16, 30, 16, 7
What is the mean number of movie tickets sold during the week?

• 17
• 21
• 16
• 18

The dot plot below represents the number of dollars in allowance that students receive each week in Mrs. Jimenez's class. What is the median of allowance?

• 5
• 6
• 7.5
• 8

Which of the statements about the data in the histogram is true?

• A total of 30 teams were included in the data.
• Over half of the teams made 26-30 field goals in the season.
• There were 13 teams that made between 21-25 field goals during the season.
• A total of 18 teams made 26 or more field goals.

The number of people on various teams within a soccer league are shown below. Which box plot best represents the data?
15, 16, 16, 18, 19, 19, 20, 20, 21, 22, 23

• Plot A
• Plot B
• Plot C
• Plot D

Determine the IQR of the data below.
11, 13, 16, 17, 8, 10, 14, 14, 17, 14

• 11
• 16
• 5
• 14

Based on the box plot below, which statement is NOT true?

• The oldest team member is 24.
• The median age is 22.
• Fifty percent of the participants are older than 22.
• Less than 25% of the participants are 20 or younger.

Each of the 19 employees took a CPR test. The test scores are displayed below in a histogram.
Which of the following data sets best represents the scores?

• 53, 61, 68, 69, 71, 74, 75, 75, 77, 78, 78, 83, 84, 87, 88, 91, 91
• 53, 68, 69, 70, 71, 74, 75, 75, 77, 78, 78, 81, 85, 86, 88, 91, 91
• 57, 60, 63, 65, 66, 71, 72, 73, 77, 79, 79, 79, 80, 81, 81, 83, 89, 90, 91

Compare the two box plots below. Which of the following statements is NOT true?

• The interquartile range of both Class A and Class B is approximately 2.
• The median number of siblings in Class B is approximately 2.5.
• Both Class A and Class B have students who are only children.
• Over half of the students in class A have two or more siblings. 

The number of wins in the 2015 season in the American League is shown below.
93, 87, 81, 80, 78, 95, 83, 81, 76, 74, 88, 86, 85, 76, 68
What is the median number of wins in the American League?

• 80
• 81
• 83
• 85

What is the range of the data?

• 8
• 6
• 10
• 12