In a recent health survey, 330 randomly selected college undergraduates were asked, "Regarding your current weight, do you feel that you're: 'About right', 'Overweight', or 'Underweight'?" A contingency table summarizing the results of this survey is provided below.
Assume that this is a representative sample for men and women in this age group.
|
Weight Perception versus Gender |
| Gender |
About right |
Overweight |
Underweight |
| Female |
141 |
18 |
11 |
| Male |
110 |
2 |
48 |
A) In this study the explanatory variable is:
Impossible to tell without a regression equation or a scatter plot perception of weight Quantitative and discreteQualitative and ordinalgenderYou cannot have an explanatory variable for bivariate qualitative dataYou cannot have a response variable for bivariate qualitative data
Note: for the problems in this section you can, where appropriate, express your answers in fractional 'n/d' form. If you compute a decimal answer, please use 3 decimal precision.
B) The best point estimate for the proportion of all college undergraduates who perceive themselves to be about right is:
C) The odds that a man sees himself as being underweight is:
D) The odds ratio for a woman seeing herself as overweight versus a male in the same age group is: