i cheated

[incogn1to]

<p>

1. A correlation coefficient of .57 indicates a moderate, positive, linear relationship between high school grades and success. It is positive, which is good. There is a moderate correlation, also good in the context of this problem, where one would not expect a perfect association. And this is only for least squares linear regression; perhaps a quadratic, power, or exponential model would be better.
2. How do they define success? There can only be correlation between two quantitative variables.</p>

<p>Basically, I think you pulled that number off the top of your head, or the person you got it from did.

</p>

<p><a href=“http://www.fairtest.org/sat-i-faulty-instrument-predicting-college-success[/url]”>http://www.fairtest.org/sat-i-faulty-instrument-predicting-college-success&lt;/a&gt;&lt;/p&gt;

<p>What I meant by success was college freshman GPA, and I’m sorry for not mentioning that. SAT scores and freshman GPA are quantitative variables.</p>