Reading Charts and Graphs

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

• Kilowatts used by appliances per day

• Average Hours appliances were used per day

• Number of hours each appliance was used per day

• Hours appliance used monthly

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

• Hours in a day
• Days of the week
• Types of appliances
• Amount of electricity used

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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?

• Amount of electricity used
• Weekday: hours of use
• Number of appliances used
• Weekend: hours of use

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Which appliance has the most total usage?

• Fridge
• Heater
• Lights
• Television

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

• 8
• 16
• 2
• 10

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

• 5
• 8
  
• 13
• 14

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After the refrigerator, which appliance is used the most on weekdays?

• Television
• Heater
• Lights
• Computer

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On a small island, scientists kept track of the number of wolves and moose over time. Which trend did they record?

• A drop in wolf population and a drop in moose population

• An increase in wolf population and a drop in moose population

• A drop in wolf population and an increase in moose population

• An increase in wolf population and an increase in moose population

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According to this chart, which country spent the least money on books in 2004?

• Germany

• France

• Italy

• Australia

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This chart shows the composition of lunar soil. Which element is third most abundant?

• Silicon

• Magensium

• Iron

• Impossible to tell