Mathematics

3 April, 17:32

Linda randomly surveyed 20 teachers at her school

about whether they prefer chalkboards or dry erase

boards. She repeated the survey three times with three

different sets of teachers.

Which pair of Linda's samples seems to have the

lowest variability and therefore, are representative

samples?

Chalk

Dry Erase

Sample 1

12

Sample 2

Sample 3

+5

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