# Tagged Questions

For questions about correlation of two random variables. Use it with [tag: random-variables] and [tag: probability].

27 views

37 views

### Orthogonality of Two Signals.

My last question's link: Reconciling different definitions of orthogonality However, I failed to understand why they are equivalent. If $f$ and $g$ are real, \begin{align} \int_{<T>}f(t)g(t)~...
27 views

### How to calculate the correlation between two ratings

Suppose x and z are two persons who rate a classical piece of music y on a five point scale. x rates y $3$ out of $5$ z also rates y $3$ out of $5$ I need to know how much the ratings of x ...
48 views

40 views

### Constructing a sample by correlation

Suppose we have two samples with known correlation (should be relatively high). Say both samples have $n$ data points. What if now we still know the correlation factor but one sample only consistent ...
30 views

76 views

17 views

### Point Biserial Correlation

I had a look around here and around the web and some literature but couldn't find any questions on this topic. I would like to quantify the strength of association between the the 2 variables X and Y....