All are true regarding students t-test, except-

A. Standard error of mean is not estimated

B. Standard population is selected

C. Two samples are compared

D. Student's t- test map is required for calculation

Correct Answer: Standard error of mean is not estimated

Description: Ref:Parks 23rd edition pg 852 Student T test requires mean and SD Tests of significance: Qualitative: Chi- square : 2 or more than 2 groups Mc Nemar test : 1 group. ( before and after intervention) Quantitative: Paired T test: 1 group Student T test/ unpaired T test: 2 groups Anova: more than 2 groups.

Category: Social & Preventive Medicine

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