CBA #7 Review Part 1

The box plots show the distribution of test scores of Kevin and Larry in a math class.

Which of the statements about the two data sets appears to be true?

• Kevin had always lower test scores than Larry in this math class.

• The range of Kevin’s test scores is less than the range of Larry’s test scores.

• The interquartile range of Kevin’s test scores is less than the interquartile range of Larry’s test scores.

• The median of Kevin’s test scores is less than the median of Larry’s test scores.

Waldo and Freddy went to catch fish. The dot plots show the lengths of the fish they caught.

Which statement about the lengths of the fish caught by Waldo and Freddy appears to be true?

• The mode length of Freddy’s fish is less than the mode length of Waldo’s fish.

• The median length of the fish caught by Waldo is greater than the median length of the fish caught by Freddy.

• The range of the length of the fish caught by Freddy is greater than the range of the length of the fish caught by Waldo.

• The distribution of the data for the length of Waldo’s fish and Freddy’s fish are symmetrical.

Which is a true statement based on the dot plots below?

• Set A has the greater range.

• Set A has the greater median.

• Set A has the lesser mean.

• Set A and B are both symmetrical.

A car company surveys 50 people to find out their car color preferences. The results are shown in the bar graph.

Which statement is best supported by the information in the bar graph?

• 30% of the people surveyed prefer either gray or black cars.

• 40% of the people surveyed prefer either gray or white cars.

• 50% of the people surveyed prefer either silver or black cars.

• 60% of the people surveyed prefer either white or silver cars.

Mrs. Kelso and Mr. Bonham gave each of their students a small bag of colored tiles. The students each counted the number of purple tiles they received. The box plots display the data for both classes.

Which statement is best supported by the information in the box plots?

• The interquartile range of the data for Mrs. Kelso’s class is greater than the interquartile range of the data for Mr. Bonham’s class.

• The range of the data for Mr. Bonham’s class is less than the range of the data for Mrs. Kelso’s class.

• The minimum number of purple tiles in Mrs. Kelso’s class is equalt to the minimum number of purple tiles in Mr. Bonham’s class.

• The median number of the data for Mr. Bonham’s class is less than the median number of the data for Mrs. Kelso’s class.

In two data sets shown below, find the difference in interquartile ranges.

• 9

• 18

• 6

• 1

13. The dot plot shows the number of siblings for each student in Mr. Marcum's first-period math class.

What percent of the students in Mr. Marcum's class have more than one siblings?

• 20%

• 11%

• 55%

• 25%

In a recent food study, 25 people were asked what fruit they like the best. The results shown in the bar graph.

Based on the information in the graph, what percentage of the people surveyed like apple and

cherry best?

• 6%

• 11%

• 17%

• 28%

The double bar graph below shows the number of cups of coffee that a large random sample of people consumed, broken down by gender.

• More men than women drink at least two cups of coffee a day.

• Men and women drink the same amount of coffee every day.

• Women drink more coffee per day than men on average.

• Men drink more coffee per day than women on average.

A teacher conducts a survey of 50 randomly selected 6th grade and 50 randomly selected 7th grade students in a school. The survey asks the students about the type of movies they like to watch. The table shows the number of students who selected each type of movie.

Which conclusion is best supported by the table?

• 6th graders like action movies more than horror and comedy movies.

• 6th graders like comedy movies more than 7th graders like action movies.

• More 7th graders than 6th graders like horror movies.

• 7th graders like horror movies more than comedy movies.