Determining the sample size in a stratified sampling plan involves identifying homogeneous subgroups.

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In order to determine the sample size in a stratified sampling plan, we need to identify homogeneous subgroups within the population. This is because stratified sampling involves dividing the population into subgroups that are as homogeneous as possible, and then selecting a sample from each subgroup. The sample size for each subgroup will depend on the size of the subgroup and the level of precision desired in the estimate of the population parameter.

Determining the Sample Size in a Stratified Sampling Plan Involves