According to Research in Practice 15.1, statistical power in data analysis can be improved by:
A)using a larger sample.
B)changing the alpha level, say from .05 to .001.
C)increasing the size of the effect of the independent variable.
D)using a larger sample, and increasing the size of the effect of the independent variable would improve statistical power.

Question

Quizplus · Accepted Answer

Statistical power can be improved by using a larger sample size, which reduces the standard error and makes it easier to detect a true effect. Additionally, increasing the size of the effect of the independent variable makes the effect more detectable against the noise of the data, thus improving power.