Author Question: Which pair of variables should produce a correlation near zero? a. model year (2003, 2004, etc.) ... (Read 113 times)

nmorano1 · **on:** Jun 19, 2018

Which pair of variables should produce a correlation near zero?

a. model year (2003, 2004, etc.) and price for a used Honda
b. driving distance from college and weekly cost of gas for commuters
c. number of hours studying and number of errors on a math exam
d. IQ and weight for a group of third-grade students

Question 2

A regression-discontinuity design is particularly attractive when ____.

a. the researcher is evaluating a program that has already begun
b. the unit of study is a community rather than an individual
c. it is important that those who most need the treatment receive it
d. there are concerns about selection-maturation effects