This is implementation to count Pearson Regression Coefficient, based on 2 data sets. The system does not allow anything that is not a number, floats are ok. Calculations are all handwritten. The system displays all data being calculated, upon pressing "Calculate" including means etc. It then shows coefficient in number and whether it has a No Correlation/Low/Strong
Used temp values for validating, to make sure no error is found, and only upon pressing "Add" are they added to the dataset.
