r2

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r2
Message posted by Jerry on January 26, 2000 at 12:00 AM (ET)

I am having trouble interepting this paragraph...Parents influence did not decrease pregnancy chance (r2[squared] = .939)
and parental marital status did not decrease risk either
(r2 = .866).
What does r2 mean? How is it calculated?

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Re: r2
Message posted by Rico on January 27, 2000 at 12:00 AM (ET)

r2 is the coefficient of determination.
It means that how many percentage of one variable can be explained by the other variable.
It is the square value of coefficient of correlation.

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