At sda.berkeley.edu/GSS, cross-tabulate HAPMAR with YEAR, so you can see how conditional distributions on marital happiness in the GSS have changed since 1973. Using conditional distributions and standardized residuals, explain how these results show a very slight trend over time for fewer people to report being very happy.
Answer to relevant QuestionsA young child wonders what causes women to have babies. For each woman who lives on her block, she observes whether her hair is gray and whether she has young children, with the results shown in the table that follows. a. ...When df = 1, the P-value from the chi-squared test of independence is the same as the P-value for the two-sided test comparing two proportions with the z test statistic. This is because of a direct connection between the ...For the 2 × 3 table on gender and happiness in Exercise 11.4 (shown again following), software tells us that X2 = 0.46 and the P-value = 0.79. a. State the null and alternative hypothesis, in context, to which these results ...An alternative to the regression formula μy = α + βx expresses each y value, rather than the mean of the y values, in terms of x. This approach models an observation on y as y = mean + error = α + βx + ɛ, Where the ...Refer to the previous exercise. a. Predict the math SAT score for a student who has a verbal SAT = 800. b. The correlation is 0.5. Interpret the prediction in part a in terms of regression toward the mean. Previous ...
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