In a survey, statistical precision in estimating population parameters from sample statistics can be increased by
A) increasing sample size.
B) increasing variability of data.
C) limiting the number of subjects surveyed.
D) using a stricter confidence interval.

Question

Quizplus · Accepted Answer

Increasing sample size will decrease the margin of error and increase the accuracy of the estimate, as the sample mean will be a better representative of the population mean. Increasing variability of data, limiting the number of subjects surveyed, and using a stricter confidence interval will not improve the precision of the estimate.

In a Survey, Statistical Precision in Estimating Population Parameters from Sample