Question

1. which of the following is a systematic error that can distort survey results?

a. bias
b. variance
c. mean
d. median

Explanation:

Bias is a systematic error. It causes consistent deviation from the true value in survey results. Variance measures spread, mean is an average, median is a middle - value. None of these (variance, mean, median) are systematic errors like bias.

Answer:

A. Bias