3.14. Table 3.13 summarizes responses of 2333 subjects in the 2006 General Social Survey to the question,

"About how often did you have sex during the last 12 months?"

(a) Report the median and the mode. Interpret.

(b) Treat this scale in a quantitative manner by assigning the scores 0, 0.1, 1.0, 2.5, 4.3, 10.8, and 17 to the categories, for approximate monthly frequency. Find the sample mean, and interpret.

TABLE 3.13 How Often Had Sex Frequency Not at all 595 Once or twice 205 About once a month 265 2 or 3 times a month 361 About once a week 343 2 or 3 times a week 430 More than 3 times a week 134