Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  • Question 4 (request help)

    The average times (in minutes) a group of students spends studying and watching TV per school day are given.

    Studying: 25, 30, 35, 45, 60, 60, 70, 75

    Watching TV: 0, 35, 35, 45, 50, 50, 70, 75

    a. Find the mean times for studying and for watching TV.

  • Studying :    
    Watching TV :    
  • Question 4 (request help)

    b. Find the mean absolute deviations (MADs) for each data set.

  • Studying :    
    Watching TV :    
  • Question 4 (request help)

    c. Find the difference of the means as a multiple of the MAD, to two decimal places.

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  Unit 5 Performance Tasks  

  • Question 5 (request help)

    Entomologist

    An entomologist is studying how two different types of flowers appeal to butterflies. The box-and-whisker plots show the number of butterflies that visited one of two different types of flowers in a field. The data were collected over a two-week period, for one hour each day.

    a. Find the median, range, and interquartile range for each data set.

  • Type below:
  • Question 5 (request help)

    b. Which measure makes it appear that flower type A had a more consistent number of butterfly visits? Which measure makes it appear that flower type B did? If you had to choose one flower as having the more consistent visits, which would you choose? Explain your reasoning.

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