Answered: c. the sample size was very large

Math

Statistics

c. the sample size was very large

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A very small effect size can turn out to be statistically significant because

a. population standard deviations were too large

b. deviation scores were used rather than raw scores

c. the sample size was very large

d. the assumptions underlying the z test were too strict

Please explain why the answer is c: the sample size was very large

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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