Question

Which statistical test is used to compare mean of two identical group?

• A. ANOVA
• B. Sample t test
• C. Paired t test
• D. Pooled t test

Hint:

Use the paired t-test when comparing two related measurements (same group, different times or conditions) — crucial for bioequivalence and clinical trial designs in GPAT.

Answer 1

The Correct Option is C

The paired t-test is a statistical method used to compare the means of two related (i.e., identical or matched) groups. It is used when the same subjects are measured twice. for example, before and after a treatment, or under two different conditions. The test determines whether the average difference between paired observations is significantly different from zero. 

In the context of GPAT, it is essential for comparing pre- and post-treatment effects or evaluating crossover study designs in biostatistics and clinical trials. 

Other options: 

(A) ANOVA (Analysis of Variance) — Used when comparing means of more than two groups. 
(B) Sample t test (Unpaired/Independent t test) — Used to compare the means of two independent groups. 
(D) Pooled t test — A form of unpaired t-test that assumes equal variances in two independent samples.