Alg review # 1: measures of center/variation/normal distribution

What is the mean of the data set?

{11, 14, 15, 16, 16, 18, 20, 20, 22, 22}

• 11

• 15.6

• 17.4

• 18

What is the median of the data set?

12, 15, 18, 20, 22, 23, 24, 40, 45

• 22

• 12

• 38

• 40

The histogram shows the ages of people in a community chorus.

How many people in the chorus are between 30 and 50?

The average temperatures across Washington, Texas, Oklahoma, New York, Missouri, Georgia, and Hawaii are 48°F, 65°F, 60°F, 45°F, 54°F, 64°F, 70°F respectively. Find the median.

• 48° F

• 60° F

• 56° F

• 58° F

• 45° F

Which of the following best describes the distribution of data in the dot plot?

• bimodal

• bell shaped

• skewed

• symmetrical

• uniform

What data value is the median of the data shown in the box plot?

• 64
• 62
• 66
• 58
• 60

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8
• 62

What percentage of the data is between 90 and 140?

• 25 %

• 50%

• 75%

• 100%

• 0%

The list below shows the most recent test scores for students in Mr. Garcia’s study group.

78, 90, 94, 72, 80, 68, 72, 88, 94, 98, 86, 96

Which box-and-whisker plot correctly represents the data in the list?

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