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The following summarizes the number of fiction books read last summer by a sample of 27 students.Number of students Number of books readper student4 28 315 4What is the mean number of books read? Round your answer to the nearest tenth.books

Question

The following summarizes the number of fiction books read last summer by a sample of 27 students.Number of students Number of books readper student4 28 315 4What is the mean number of books read? Round your answer to the nearest tenth.books

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Solution

To calculate the mean number of books read, you need to multiply the number of students by the number of books each group read, add those products together, and then divide by the total number of students.

Here's how you do it:

  1. Multiply the number of students by the number of books each group read:

    • 4 students read 2 books each, so that's 4*2 = 8 books
    • 8 students read 3 books each, so that's 8*3 = 24 books
    • 15 students read 4 books each, so that's 15*4 = 60 books
  2. Add those products together to get the total number of books read:

    • 8 + 24 + 60 = 92 books
  3. Divide the total number of books read by the total number of students to get the mean number of books read:

    • 92 books ÷ 27 students = approximately 3.4 books per student

So, the mean number of books read is approximately 3.4.

This problem has been solved

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