Unit 8, Lesson 5
Using Dot Plots to Answer Statistical Questions
Grade 6
Practice
Problem 1
Three sets of data about ten sixth-grade students were used to make three dot plots. The person who made these dot plots forgot to label them. Match each dot plot with the appropriate label.
Dot Plot A
Dot Plot B
Dot Plot C
Ages in years
Numbers of hours of sleep on nights before school days
Numbers of hours of sleep on nights before non-school days
Problem 2
The dot plots show the time it takes to get to school for ten sixth-grade students from the United States, Canada, Australia, New Zealand, and South Africa.
- List the countries in order of the center of the distributions, from shortest to longest.
- List the countries in order of the spread of the distributions, from the least variability to the greatest.
Problem 3
Twenty-five students are asked to rate how important it is to reduce pollution on a scale of 0 to 10. A rating of 0 means “not at all important” and a rating of 10 means “very important.” Here is a dot plot of their responses.
Explain why a rating of 6 is not a good description of the center of this data set.