A statistical analysis is internally valid if
A)its inferences and conclusions can be generalized from the population and setting studied to other populations and settings.
B)statistical inference is conducted inside the sample period.
C)the hypothesized parameter value is inside the confidence interval.
D)the statistical inferences about causal effects are valid for the population being studied.

Question

Quizplus · Accepted Answer

Internal validity means that the study or analysis accurately measures the relationships or causal effects between the variables in the population under study. Therefore, option D is correct, as it focuses on the validity of statistical inferences about causal effects in the studied population. Option A is about external validity, which refers to the generalizability of results to other populations and settings, and option B and C are about the accuracy of statistical estimation and inference rather than internal validity.

A Statistical Analysis Is Internally Valid If