Statistics Review

Students at a middle school participated in a walk-a-thon. The table shows the number of laps different students walked. The upper quartile is _____.

Students at a middle school participated in a walk-a-thon. The table shows the number of laps different students walked.

The inter quartile range is _____.

The dot plot shows the number of hours students spent working on their science fair projects last weekend. Select the true statements about the data set.

• There are clusters from 3 to 5 and from 8 to 10.

• There is a gap from 6 to 7.

• There are extreme values in the data.

• The data have no mode.

The box plots show the distribution of canned goods collected by students in the sixth and seventh grades during a food drive. Select the true statements.

• The data set for the sixth graders has a smaller range than the data set for the seventh graders.

• The data set for the seventh graders has a smaller interquartile range than the data set for the sixth graders.

• The data set for the sixth graders is less spread out than the data set for the seventh graders.

A histogram shows the distribution of students' ages in a school. If the 10-12 age group has the highest frequency, what does this tell us?

• Students aged 10-12 are the youngest.

• Most students are aged between 10 and 12.

• No students are older than 12.

• Students aged 10-12 are the majority.

Questions that have a variety of answers

• Basic

• Interview

• Statistical

• Mystical

Find the median of the following set of numbers: 12, 7, 9, 13, 8.

• 9

• 10

• 8

• 12

A scatter plot shows the relationship between hours studied and test scores. If there is a trend line going upwards, what does this suggest?

• As study hours decrease, test scores increase.

• As study hours increase, test scores decrease.

• As study hours increase, test scores increase.

• There is no relationship between study hours and test scores.

A histogram shows the scores on a math test. If the 70-79 range has the tallest bar, what does this indicate?

• Most students scored between 70 and 79.

• The test was out of 70-79 points.

• One student scored between 70 and 79.

• The average score was between 70 and 79.