I came across the formula for the Pearson Correlation but it gives values between -1 and 1. How would I modify the formula so that it gives values between 0 and 1?
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Add 1 and divide by 2 perhaps? – Roger Rowland Jun 25 '14 at 14:12
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Thank you Roger! I think that will work! – covfefe Jun 27 '14 at 14:38
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To normalize any set of numbers to be between 0 and 1, subtract the minimum and divide by the range.
In your case the min is -1 and the range is 2, so if a value in your set is -0.5, that value becomes:
(-0.5 - (-1)) / 2
= 0.25
Neil McGuigan
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Does it make a difference whether you subtract the min and divide by range as opposed to adding 1 and dividing by 2? – covfefe Jul 09 '14 at 14:31
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2@user3004041 Well the former works in all cases, and the latter works in this specific case. – Neil McGuigan Jul 09 '14 at 15:26