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A teacher examined $2$ different tests from each of her math classes. Each class had the same number of tests. $\newline$ Is this sample of the tests likely to be biased? $\newline$ Choices: $\newline$ (A)yes $\newline$ (B)no

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Identify biased samples

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Q. A teacher examined

2

different tests from each of her math classes. Each class had the same number of tests.

\newline

Is this sample of the tests likely to be biased?

\newline

Choices:

\newline

(A)yes

\newline

(B)no

Understand scenario: Step $1$ : Understand the scenario and what is being asked. $\newline$ The teacher took $2$ tests from each of her math classes, and each class had the same number of tests. We need to determine if this sampling method is likely to be biased.
Analyze sampling method: Step $2$ : Analyze the method of sampling. $\newline$ Since the teacher took the same number of tests from each class, the sampling method seems uniform across all classes. This suggests that there is no preference or exclusion of any particular class.
Consider bias definition: Step $3$ : Consider the definition of bias in sampling. Bias in sampling occurs when certain members or groups within the population are favored or ignored. In this case, since every class is treated equally and the same number of tests is taken from each, there is no indication of favoritism or avoidance.

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