Which of the following is true of a valid test?
A) It must use random sampling.
B) It must be cost-effective.
C) It must be free of bias.
D) It must be open-ended.
E) It must be repeatable.

Question

Quizplus · Accepted Answer

For a test to have validity, results must be free of bias and reflect the true status of the market. Five people aren't enough for a minimum sample, and liking a toy is not necessarily a predictor of whether these people would buy it.

Which of the Following Is True of a Valid Test