A magazine,The Atlantic,provides a clearly written summary of a recent longitudinal study. The headlinereads:

Study Link: Math Skills at Age 7 Predict How Much Money You'll Make

(Source: https://www.theatlantic.com/health/archive/2013/05/study-math-skills-at-age-7-predict-how-much-money-youll-make/275690/)

According to the summary, the researchers measured kids' IQ, math skills, reading skills, and SES (Socioeconomic status) at age seven, and then measured their income at age 42. They found that:

"How much money the people made at midlife was predicted by math ability at age seven. The other factors may have helped them on the path to success, but even when those were controlled for, the association between basic math and reading skills and future socioeconomic status remained, and remained significant . .."

Do you notice how this description uses the key phrase, "even when those were controlled for"?

This should signal to you that the researchers used multiple regression in their design.

Based on the video-lectures, lecture slides and the information in the textbook, please, answer the following questions in regards of this study:

1. What might the regression table have looked like in the study? What would the DV have been? What would the predictor variables have been? Estimate what you think the beta might have been for the predictor, "Math skills at age 7"that is, is it positive or negative? Significant or not?

1. Suppose a critic reads this article and says, "I don't think that it's math skillsI think it's IQ. Smarter people just earn more money and they did better at math as kids, that's all." What should you say in response? In this study, is IQ a potential third variable that could explain the association between math skills and future income?