If It Is Important to Analyze Four Subgroups of a Total

Multiple Choice

If it is important to analyze four subgroups of a total sample: married women over 35, single women over 35, married women under 35, and single women under 35 and each group is expected to make up about 25 percent of the total sample, a sample of 400 will only have 100 in each subgroup, what is the problem with the smaller sample size?

A) smaller groups lead to larger sampling errors
B) smaller groups lead to smaller sampling errors
C) larger total samples are needed for subgroups
D) none are problems with small sample sizes