Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 15:Two-Way Tables; Model Quiz


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15.1 Two-Way Frequency Tables
Martin collected data from students about whether they played a musical instrument. The table shows his results. Use the table for Exercises 1–4.

  • Question 1 (request help)

    Of the students surveyed, how many played an instrument?
  •     students
  • Question 2 (request help)

    How many girls surveyed did NOT play an instrument?
  •     girls
  • Question 3 (request help)

    What is the relative frequency of a student playing an instrument? Write the answer as a percent.
  •     %
  • Question 4 (request help)

    What is the relative frequency of playing an instrument among boys? Write the answer as a decimal.
  •     %

15.2 Two-Way Relative Frequency Tables

Students were asked how they traveled to school. The two-way relative frequency table shows the results. Use the table for Exercises 5–7. Write answers as decimals rounded to the nearest hundredth.

  • Question 5 (request help)

    What is the joint relative frequency of high school students who ride the bus?
  •    
  • Question 6 (request help)

    What is the marginal relative frequency of students surveyed who are in middle school?
  •    
  • Question 7 (request help)

    What is the conditional relative frequency that a student rides the bus, given that the student is in middle school?
  •    

ESSENTIAL QUESTION

  • Question 8 (request help)

    How can you use two-way tables to solve real-world problems?
  • Type below:

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