Avg mid-term score is 82.5 and y hat is 81.87 which is closer to the actual 81.9. So the calculation is perfect. And if we can round off 81.87 to 81.9 then its a perfect prediction. Thank you for the detailed calculation steps.
I didn't. All this was written by me. If you need a calculator to calculate the regression, then look for any TI calculator that does statistics - then look for regression. You might find some online calculators that can do it for you.
When you find the linear equation then you plug X, in this case X-bar which is 87 and then you have an answer Y from the equation which is 86.27. So, you input 87 and then the output is 86.27. The idea is that the equation will predict an answer when you plug in 87. So, to predict the final exam score, you put 87 and then the predicted value is 86.27.
When you find the linear equation then you plug X, in this case X-bar which is 87 and then you have an answer Y from the equation which is 86.27. So, you input 87 and then the output is 86.27. The idea is that the equation will predict an answer when you plug in 87. So, to predict the final exam score, you put 87 and then the predicted value is 86.27.
