1. Look at the bar graph on the left. Can you tell what the bar graph measures?

2. What do the numbers in the vertical axis of this graph represent?

3. Now read what's on the horizontal axis, the line that runs along the bottom of the graph from left to right. It is labeled Appliance. Each appliance in the graph has two bars. What is measured by the blue bar?

4. Which appliance has the most total usage?

5. On average, how many hours is the computer used on a weekday?

6. How many hours a day on average is the heater used on weekends?

7. Which appliances are used for an average of 5 hours a day more on weekends than on weekdays?

8. After the refrigerator, which appliance is mostly used on weekdays?

9. Which appliance is used twice as many hours on the weekends as it is on weekdays?

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