Subtopic: Mean, median, mode and standard deviation
Question Statement:
For accepting or rejecting a null hypothesis, which one of the following is NOT used as a significance test method in statistics?
Options:
(A) Z-test
(B) Student's t-test
(C) Pearson's correlation
(D) Relative standard deviation
Official Answer Key:
D
Step-by-Step Solution & Explanation
Z-test, t-test and the significance test on Pearson's correlation coefficient all yield a test statistic that is compared with a critical value to accept/reject H₀.
Relative standard deviation (= SD/mean × 100) is only a measure of dispersion / precision; it has no associated null-hypothesis distribution.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.