Statistics Test

The distribution of scores on a recent physics quiz is shown in the box plot below. What is the interquartile range?

• 6

• 12

• 26

• 72

What is the median of the data?

• 5

• 6

• 7

• 8

What is the mean of the data?

{10, 14, 18, 22, 26, 30, 46, 46}

• 24

• 26.5

• 28

• 36

The weights of 9 randomly selected bananas, in grams, are given below in ascending order

145, 152, 156, 158, 160, 160, 164, 174, 180

Which of the following would be the correct box plot?

• 
• 
• 
• 

The box plot below shows the distribution of gasoline prices, in dollars per gallon, of a survey of gasoline stations around the country. What is the difference between the maximum price per gallon and the third quartile price?

Mohammed surveyed 15 students in the class to determine how many pets each had in their household. The results are shown below. What was the mean number of pets?

The two box plots show the distribution of daily low temperatures in September for New York City and Boston. Which city has the greater median high temperature?

• New York City

• Boston

• The medians were equal.

• Not enough information

The two box plots show the distribution of daily high temperatures in November for Chicago and Denver. Which city has the greater interquartile range?

• Chicago

• Denver

• There are the same.

• Not enough information

Which of the following are true based on the diagram?

• The interquartile range is 8.

• The median is 48.

• The lower quartile is 38.

• The range is 30.

• 50% of the scores are between 38 and 52.

Based on the histogram, how many runners ran the 50-yard dash?