Statistics Review

What is the interquartile range of the data?

• 8

• 9

• 13

• 21

What is the shape of ride B?

• symmetrical

• skewed left

• skewed right

Consider the data values 24, 18, 3, 19, 23, 26, 25, and 25. Which data value is an outlier?

• 3

• 24

• 19

• 25

The double box-and-whisker plot represents the prices of pairs of shoes at two stores. Which store’s prices are generally lower?

• Store A

• Store B

Mrs. Patillo wanted to know whether there was a relationship between two sets of her students’ test scores. The scatterplot below shows the scores of her students. Which statement best describes the relationship?

• No correlation

• Constant relationship

• Negative correlation

• Positive correlation

Which statement is true about the scatter plots?

• Graph 1 shows a strong relationship, and Graph 2 shows a weak relationship.

• Graph 2 shows a strong relationship, and Graph 1 shows a weak relationship

• Graph 1 shows a negative correlation, and Graph 2 shows a positive correlation.  

• Graph 2 shows a negative correlation, and Graph 1 shows a positive correlation.

Which statement describes the relationship between the data sets displayed on the scatterplot?

• The number of pets owned by a student increases as the student’s science test score increases.

• The number of pets owned by a student decreases as the student’s science test score increases.

• The number of pets owned by a student remains the same as the student’s science test score increases.

• There is no relationship between the number of pets owned by a student and the student’s science test score.

A used-car dealer kept records of the selling price of his used cars in 2005. The scatterplot shows the average selling price of his used cars based on the age of the used car. Using the graph, which is the closest to the selling price of an 8-year-old car?

• $7500

• $5000

• $2500

• $500

The scatterplot below suggests which of the following types of data relationship?

• Weak, negative

• weak, positive

• strong, negative

• strong, positive

The scatter plot below shows John’s scores in the seven math and science chapter tests this semester. Which statement best describes the association between his math and science test scores?

• positive, linear, no outliers

• negative, linear, no outliers

• positive, linear, one outlier

• negative, linear, one outlier