Analyzing and Comparing Data

Group A and Group B were randomly sampled from the same population. Which statements below are true? Select all that apply.

• Group A has a greater median than Group B

• Group A has a greater range than Group B

• Group A has greater variability than Group B

• Group B has a greater median than Group A

• You cannot tell which group has the greater median based on the picture.

Which data set shows students who tend to spend more time on homework per week?

• Finn's Data Set

• Jonah's Data Set

Mykel surveyed 15 7th graders and 15 8th graders at his school to see how many hours they spend per day listening to music. He made two box plots to compare the data sets. What inference can he draw from the data sets?

• The range is greater for the 8th graders, so there is greater variability for the 8th graders than the 7th graders.

• The person who listens to music the least is a 7th grader.

• The median is greater for the 7th graders, so they generally spend more time listening to music than 8th graders.

• No inferences can be made from the box plots.

The box plots describe the heights of flowers selected randomly from two gardens. What is the median of the flowers in Garden Y, in inches? (a)   inches

Using the box plot, who spend more time in outdoor activity? Explain.

• Soccer players, because they have a greater range of active minutes outdoors.

• Basketball players, because they have a greater range of active minutes outdoors.

• Soccer players, because they have a greater median of minutes spent outdoors.

• Basketball players, because they have a greater median of minutes spent outdoors.

A random survey of seventh- and eighth-grade students was conducted to find out how many hours are spent doing homework each night. Of the two sets of data, which has the greater median?

• Seventh graders

• Eighth graders

• They have the same median.

• Impossible to determine from the box plot.

Which statement is true based on the box plots?

• Plot 2 has a larger spread than plot 1.

• Plot 1 and plot 2 have a center score of 60.

• Plot 1 has a minimum of 30 and plot 2 has a maximum score of 75.

• Plot 2 has a larger IQR than plot 1.

Answer the question pictured.

• I and II only

• I, II, and IV only

• II and III only.

• I, II, and III only.

Answer the question pictured.

• F

• G

• H

• J

A random sample of 21 students at Daulton Elementary and at Spenser Elementary is asked how many sibling they have. The results are pictured. When comparing the two populations, which statement is NOT supported by the data?

• The students at Spenser Elementary tend to have more siblings than the students at Daulton Elementary.

• The range in the data for Daulton Elementary is the same as the range in the data for Spenser Elementary.

• The median number of siblings for Daulton Elementary is larger than the median number of siblings for Spenser Elementary.

• The students at both elementary schools tend to have 2 or more siblings.