1. How does a bar graph represent the different values of a variable?
2. A bar graph shows the number of books read. Amy's bar is at a height of 9 and Ben's bar is at 4. How many more books did Amy read than Ben? The answer is ___.
3. A bar graph compares student test scores. The bar for Math is taller than the bar for History. What does this mean?
4. A double bar graph compares sales for two stores. In March, Store 1's bar is at 30 units and Store 2's bar is at 45 units. Store 2 sold ___ more units than Store 1.
5. A graph shows daily hours of video games played. The bar heights are: Friday, 3 hours; Saturday, 4 hours; Sunday, 2 hours. On which day was the least amount of time spent playing?
6. A bar graph shows the number of laps run by two athletes. Athlete A's bar is at a height of 12, and Athlete B's bar is at a height of 10. What is the total number of laps they ran together?
7. A survey asked 100 people to name their favorite season. Which data display is most appropriate for comparing the number of votes for spring, summer, fall, and winter?
8. A biologist tracks the height of a plant in centimeters each day for a month. Which type of graph would best illustrate the plant's growth over this period?
9. A school nurse records the heights of all the students in the 7th grade. Which data display is best for showing the distribution of the students' heights?
10. An economist wants to see if there is a relationship between the number of years of education a person has and their annual income. Which display should be used?