To investigate whether there is an association between happiness and income level, we will use data from
Question:
a. Identify the explanatory variable. Is it a categorical variable or a quantitative variable?
b. Identify the response variable. Is it a categorical variable or a quantitative variable?
c. Among above-average-income individuals 0.379 are very happy (110/290); among average income individuals 0.342 are very happy (221/646); and, among below-average income individuals 0.195 are very happy (83/426). Do the data provide any indication of an association between happiness and income level? Why or why not?
d. Is it okay to conclude that income affects happiness? If yes, explain why. If no, then identify a confounding variable that provides an alternative explanation for the association between happiness and income level.
Step by Step Answer:
Introduction To Statistical Investigations
ISBN: 9781118172148
1st Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy