Correlated Data.

There are actually 410 observations in Exercise 2.7.10 and Table 2.9. There are 205 men and 205 women. Why was Table 2.9 set up as a 3 × 3 table with only 205 observations rather than as Table 2.10, a 2 × 3, sex versus height table with 410 observations?

TABLE 2.10. Heights of Married Couples Height Sex Tall Medium Short Wife 50 104 51 Husband 60 99 46