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Results tagged with correlation
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user 238499
A measure of the degree of association among a pair of variables.
4
votes
Why $Cov(\pmb{y}, \pmb{\hat{y}}) = \pmb{y}^T \pmb{\hat{y}}$?
Correlation between $y$ and $\hat{y}$ stays at $0.9995$ while their covariance is close to $6.5$ …
- 2,665
2
votes
Accepted
Does correlation between variables changes if they are scaled by a constant?
Correlation is invariant to scale (or, for that matter, any other linear transofrmation). …
- 2,665
1
vote
Comparing continuous data with categorical data (4 categories)? Severity of lesion in rats
Ordinal regression is what you are looking for, since the lesion severity values are discrete, but ordered. Treating it as categorical would destroy their order relation.
You also don't want a linear …
- 2,665
0
votes
Accepted
Correlation with a highly significant P value and a low Pearson (r) value
If you've found small correlation between two variables, but the effect is highly significant, congratulations! …
- 2,665