Why do studies that use probability samples have excellent external validity?
A)They have good internal validity too.
B)They study every member of the population of interest.
C)They are more complicated to do.
D)All members of the population are equally likely to be represented in the sample.

Question

Quizplus · Accepted Answer

Probability samples are chosen in a way that ensures that all members of the population have an equal chance of being selected, which gives the sample representative characteristics of the population. This increases the generalizability or external validity of the findings to the population as a whole.

Why Do Studies That Use Probability Samples Have Excellent External