1.85 Height and Reading AbilityIn elementary school (grades 1 to 6), there is a strong association between a child's height and the child's reading ability. Taller children tend to be able to readat a higher level. However, there is a very significant confounding variable that is influencing both height and reading ability. What is it?
1.87 Single-Sex Dorms and Hooking UpThe president of a large university recently announced43that the school would beswitching to dorms that are all single-sex, because, he says, research shows thatsingle-sex dorms reduce the number of student hook-ups for casual sex. He citesstudies showing that, in universities that offer both same-sex and coed housing, students in coed dorms report hooking up for casual sex more often.(a) What are the cases in the studies cited by the university president? What are the two variables being discussed? Identify each as categorical or quantitative.