Comparing Data Sets Using Measures of Center

Which class shows more consistent test scores?

• Room 300 because of a larger range.

• Room 240 because of a larger range.

• Room 300 because of a smaller range.

• Room 240 because of a smaller range.

What can you infer about the populations for the two classrooms?

• Room 240 has more test scores than Room 300.

• Room 300 has lower test scores.

• Room 240 has higher test scores.

• Room 300 has higher test scores.

The double dot plots show the average wait times in minutes for two popular rides at an amusement park. Compare the measures of center and variation, which ride typically has a longer wait time?

• No inference can be made from the graph.

• Topsy Turvy

• The wait times are the same for both rides.

• Rocket Blast

What is the minimum value?

• 64

• 58

• 66

• 61

To select a new school mascot, 30 randomly selected students in each grade were asked to choose between the two finalists: Lions and Spartans. The results are shown below. Which statement is best supported by the results?

• The preferred mascot is Lions.

• The preferred mascot is Spartans.

• Fifth and sixth grade students at the school preferred the Spartans mascot.

• Seventh and eighth grade students at the school preferred a Spartans mascot.

A random survey of seventh- and eighth-grade students was conducted to find how many hours they spent reading per week. Of the two sets of data, which has the greater median?

• 7th grade

• 8th grade

Tags

7.SP.3

Compare the interquartile ranges of the data sets.

• The interquartile range of both sets is equal to 1 hour.

• The interquartile range for the eighth-graders is greater than the interquartile range for seventh-graders.

• The interquartile range for seventh-graders is greater than the interquartile range for eighth-graders.

• The interquartile range for seventh-graders is equal to the interquartile range for eighth-graders.

Tags

7.SP.3

What conclusion can you draw about how much time seventh and eighth graders spend reading each week?

• All seventh graders read more than eighth graders.

• On average, seventh graders read more than eighth graders.

• The people who read the most are all in eighth grade.

• There is not enough information in a box plot to draw any conclusions.

Tags

7.SP.3

Which group runs more kilometers per week, in general?

• soccer players

• basketball players

Tags

7.SP.3

Carter's data comparing the growth of plants using fertilizer or not using fertilizer is shown in the box plots. Use the measures of center from the box plots to make an inference about the data.

• The plants that received fertilizer have a higher median, so they grew better overall.

• The plants that did not receive fertilizer had a larger interquartile range, so they grew better overall.

Tags

7.SP.3