statistics discussion

=3.47x +184.41 where y is "calories burned" and x is "minutes on the treadmill" is the simple linear model that is demonstrated below based on the coefficients. Note that the coefficients are rounded to the nearest hundredth spot.

Now, what does the model mean? It estimates that each minute this person works out on the treadmill, he/she will burn 3.47 calories! If the person were to not work out on the treadmill, she would still burn roughly 184.41 calories (y-intercept).

Last but not least, we want to investigate the R^2. According to the information presented, this model can explain roughly 99.14% of the variation of calories burned per day!

I need a deviation of the numbers/data provided and instead of calories burned I want to do times i practice with my band which 2 days a week for about 3 hours each session, which causes for a better practice as opposed to 1 day a week for 2 hours a session. hopefully you can help make this make sense. thanks.