Martin has found a correlation of r = .18 between the two variables of using prescription stimulants (e.g., Adderall) and frontal lobe activity. This correlation is more likely to be statistically significant if:
A)the study can be applied to the real world.
B)Martin used a larger number of subjects.
C)Martin measured frontal lobe activity extremely accurately.
D)Martin's measure of prescription stimulant use is categorical.

Question

Quizplus · Accepted Answer

A larger sample size increases the power to detect significant correlations, making it more likely that the correlation found by Martin is statistically significant. Options A, C, and D are not directly related to the probability of finding a statistically significant correlation.

Martin Has Found a Correlation of R =