Biased and unbiased data

An unbiased sample is representative of the population being measured. Which of the following helps ensure unbiased sampling?

A. Using random sampling during data collection

B. Writing survey questions that encourage specific responses

C. Storing data in a spreadsheet

D. Skewing results in a certain direction

The correct answer is A. Using random sampling during data collection. Explain: Using random sampling during data collection helps ensure unbiased sampling.