Bias in a sampling method is
A) any error in the sample result, that is, any deviation of the sample result from the truth about the population.
B) the random error due to using chance to select a sample.
C) any error due to practical difficulties such as contacting the subjects selected.
D) any systematic error that tends to occur in the same direction every time you use this sampling method.
E) racism or sexism on the part of those who take the sample.

Question

Quizplus · Accepted Answer

Bias in a sampling method is any systematic error that tends to occur in the same direction every time you use this sampling method. This means that the results obtained from such a sample will not be representative of the population as a whole. Choice A relates to the accuracy of the sample result, not the bias of the sampling method. Choice B relates to random error, which is not the same as bias. Choice C refers to practical difficulties, which may be a source of bias but not all practical difficulties lead to bias. Choice E is not a relevant option in this context.

Bias in a Sampling Method Is