The relationship between sample size and the width of a confidence interval may be explained by the concept of ______.

A) z score
B) point estimates
C) sampling error
D) descriptive statistics

Sampling Error

Differences between statistics calculated from a sample and statistics pertaining to the population from which the sample is drawn due to random, chance factors.

Confidence Interval

A sequence of values, from sample statistic studies, expected to encase the value of a population characteristic not yet revealed.