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2 answers
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Understanding COVARIANCE when using same scale

Assuming that an experiment has 3 variables. Time, Temperature inside, Temperature outside. Also, considering that both the temperatures are measured using the same scale say Degree Celsius. If the ...
4 votes
2 answers
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Correlation not significant because there is not enough variance?

I have a question about correlations again. I have a dichotomous variable that I want to correlate with the another one (metric) by using the point-biserial correlation coefficient. I get a non-...