Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys


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  Extra Practice  

Copy and Solve For Exercises 10-16, shows your work and answers on a separate piece of paper.

  • Question 10 (request help)

    The table shows the number of hours of sleep for selected animals, rounded to the nearest hour.

    a. Find the mean absolute deviation of the set of data. Describe what the mean absolute deviation represents.
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  • Question 10 (request help)

    b. The standard deviation of the data is about 6 hours. Describe the data that are within one standard deviation of the mean.
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  • Question 11 (request help)

    The table shows the speeds of eight roller coasters in the United States.

    a. Find the mean absolute deviation of the set of data. Round to the nearest hundredth if necessary. Describe what the mean absolute deviation represents.
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  • Question 11 (request help)

    b. The standard deviation of the data is about 13.9 miles per hour. Describe the data that are within one standard deviation of the mean. Round to the nearest hundredth if necessary.
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  • Question 12 (request help)

    The table shows the bids that some comic books received at an auction.

    a. Find the mean absolute deviation of the set of data. Round to the nearest hundredth if necessary. Describe what the mean absolute deviation represents.
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  • Question 12 (request help)

    b. The standard deviation of the data is about $1.64. Describe the data that are within one standard deviation of the mean. Round to the nearest hundredth if necessary.
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