The standard error of the difference becomes smaller as the sample sizes _____ and the variability of the scores in the populations _____.
A)decrease;increases
B)decrease;decreases
C)increase;decreases
D)increase;increases

Question

Quizplus · Accepted Answer

The standard error of the difference decreases when sample sizes increase and variability decreases, as larger samples provide more accurate estimates and less variability leads to more precise measurements.

The Standard Error of the Difference Becomes Smaller as the Sample