An Excel pie chart displays categories of data as wedges in a circular graph. This format allows users to quickly see the contribution each category makes to the total figure and a correlation of ...

The coefficient of determination is used in statistical analysis to assess how well a model explains and predicts future outcomes. It's more commonly known as r-squared.

Negative coefficients indicate opposite direction of movement in most cases. The other key result is the correlation of the two. Regression statistics will typically include an R-squared value.