Data Plots Review

The first variable in a scatter plot is the square footage of a building. Select the variable that would likely result in a positive association.

• The number of cats in the building.

• The cost of utilities.

• The number of trees in the yard.

• The cost of gas for their car.

Students record the number of minutes they watch TV. The box plot shows the summary of the results. Which statement best describes the data?

• A quarter (25%) of the students read for 30-40 minutes.

• The interquartile range is 30.

• About half the students read for 50 minutes or more.

• The mean, or the average, number of minutes read was 47.

The dot plot shows the number of hours the students in Mrs. Ferro's class volunteer each month. Which statement about the range and interquartile range best support the data?

• The range is 5, and the interquartile range is 4.

• The range is 8, and the interquartile range is 3.

• The range is 4, and the interquartile range is 5.

• The range is 15, and the interquartile range is 16.

Based on the box plot below, which statement is NOT true?

• The oldest member is 24.

• The median age is 22.

• 50% of the team members are between 22 and 24.

The number of people on various teams within a soccer league are shown below. Which box plot best represents the data?

15, 16, 16, 18, 19, 19, 20, 20, 21, 22, 23

• 
• 
• 
• 

The dot plot shows the number of hours the students in Mrs. Ferro's class volunteer each month. What is the median of the data from the box plot??

The number of people on a soccer team is summarized in the box plot shown. What is the interquartile range of the data in the box plot?

The average monthly rainfall during the summer and winter months are summarized in the two box plots shown. Which statement about the two box plots is NOT true?

• The range in rainfall in the winter was 12 inches.

• For half of the months in the summer, the rainfall was greater than 11 inches.

• The median rainfall in the summer was 13 inches.

What type of association does this graph have?

• positive

• negative

• none

• all of the above

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 140 pages. 

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters