| Fraction of Variance Explained by Harmonics |
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| q | What is the fraction of the variance (of y) explained by a single |
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| harmonic? |
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| q | Remember we have shown in the regression analysis that the fraction |
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| is equal to the square of the correlation coefficient between this |
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| harmonic and y: |
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| q | It can be shown that this fraction is |
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| r2 |
