To make statistical comparisons between the groups in an experiment meaningful and to be able to generalize the results, what is the rule of thumb about group size?
A) At least 15 individuals per group.
B) At least 20 individuals per group.
C) At least 30 individuals per group.
D) Group size does not make a difference.

Question

Quizplus · Accepted Answer

The rule of thumb is to have at least 30 individuals per group to make statistical comparisons meaningful and to be able to generalize the results. This is because smaller sample sizes may not accurately represent the population and may lead to inaccurate results.

To Make Statistical Comparisons Between the Groups in an Experiment