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scolty

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Q: A study was undertaken to find the relationship between "emotional stability" and performance in college. The following results were obtained:

Emotional stability, Mean = 49, Standard Dev = 12

College Average, Mean = 1.35, Standard Dev = 0.5

pearson r = 0.5

n = 60

What proportion of total variation is accounted for by explained variation?

As far as i was aware, i need to know the actual values in order to be able to calculate this (ie summation of (Yprime - Ymean)^2) but the above info is the only supplied information. Have i missed something? If so id appreciate it if someone could point it out. Thanks.