Use new data on linear regression model

[Stephanie-P-Ball]

As a developer, I want to use new data to train linear regression model, so that I can get a better accuracy result

Definition of Done

• [ ] run new data in linear regression model
• [ ] determine accuracy with MSE and accuracy

Tasks

• [x] #147
• [x] #148

[Stephanie-P-Ball]

See comments on Tasks Cards for details