Data Description and Simple Inference for Continuous Data: The Lifespans of Rats and Ages at Marriage in the U.S.

The second data set, shown in Table 2.2, gives the ages at marriage for a sample of 100 couples that applied for marriage licences in Cumberland County, PA, in 1993. Some of the questions of interest about these data are as follows:

How is age at marriage distributed? Is there a difference in average age at marriage of men and women? How are the ages at marriage of husband and wife related?