Given a set of scores with a mean of 80, a standard deviation of 3, and a sample size of 82, calculate the standard error of the mean.
A) .27
B) .33
C) .68
D) .80

Question

Quizplus · Accepted Answer

The formula to calculate the standard error of the mean is: 
Standard Error of the Mean = Standard Deviation / Square Root of Sample Size 
Thus, plugging in the values given, we get: 
Standard Error of the Mean = 3 / √82 
Standard Error of the Mean = 0.329 or 0.33 (rounded to two decimal places) 
Therefore, the correct choice is B.

Given a Set of Scores with a Mean of 80