I've been helping a friend with his stats homework. We are now working on Pearson's Correlation, whose calculation is done by a rigorously constructing a table of $x$, $y$, $(x_i-\overline{x})$, $(y_i-\overline{y})$, $(x_i-\overline{x})^2$, $(y_i-\overline{y})^2$, $\sum{(x_i-\overline{x})(y_i-\overline{y})}$ and summing the data to the final formula.
There are quite a few Pearson calculators online (e.g. Woflram's), but they all provide a final numeric answer. Is there an online calculator that provides a detailed calculation as well?
