Below is an ANOVA table of a regression between change in price as a dependent variable and change in volume as an independent variable. The negative sign for change in volume indicates as volume increases, BP stock has declined over this time period and is statistically significant.

To examine the fit of the model, an estimator of variance needs to be created using the actual stock prices and the fitted values. Mean squared error or MSE is calculated below:

For only looking at price changes and volume, this is a fairly accurate fit and predictor although there are a few trouble points. Accuracy could be increased by adding to the model.

Disclaimer: Please note this is a demonstration and for academic use only.