Cody want to compare how students in two grades use the school library. For one week he records the number of books taken out each day. Which statement is true based on Cody’s example.

Cody want to compare how students in two grades use the school library For one week he records the number of books taken out each day Which statement is true ba class=

Respuesta :

Answer:

First sencente is the correct one

Step-by-step explanation:

First we can find the total books and the average book per day for each grade:

7th grade: total of 6 + 6 + 7 + 11 + 5 = 35 books

average: 35 / 5 = 7 books per day

8th grade: total of 4 + 5 + 10 + 10 + 16 = 45 books

average: 45 / 5 = 9 books per day

First sencente: true, 8th grade has 9 books per day and 7th grade has 7 books per day

Second sentence: false, 8th grade has 45 books and 7th grade has 35 books

Third sentence: false, it is 6.

Fourth sentence: false, range for 7th grade is 5, range for 8th grade is 12

The statement which is true based on Cody’s example is "The range of books in the sample is twice as great for 7th graders as compared to 8th graders".

How to compare statement

Statement 1:

  • On average, 8th graders takes out 2 more books a day than 7th graders

False

Statement 2:

  • 8th graders take out fewer books than 7th graders.

False

Statement 3:

  • The median of books in the sample for 7th grade is 7

  • The median is 6

False

Statement 4:

  • The range of books in the sample is twice as great for 7th graders as compared to 8th graders.

7th grade = 11 books - 5 books

= 6 books

8th grade = 16 books - 4 books

= 12 books

True

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