Student’s t-test: – Paired Student’s t-test: Comparing means (± SD) in paired data (in same group of individuals before and after an intervention) Comparison of mean levels can be done by Paired Student’s t - test – Unpaired Student’s t-test: Comparing means (± SD) in two different group of individuals ANOVA test (F-test/F-ratio): Comparing means (+ SD) in more than two different group of individuals Chi-square test (c2-test): Comparing percentage, proportions & fractions in two or more different group of individuals In the given question, we have to test the statistical significance of the difference in heights of school children; thus mean heights of schools children in different classes/standards/schools will be done Thus, ANOVA test (F - test/ F -ratio) is most suitable.
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