Question

Help ???
The table and scatter plot shows the time spent studying...

Answer 1

Time spent in Observed Predicted Residual

studying (x) midterm score midterm score

12 70 60.5 9.5

18 75 83.34 -8.34

Explanation:

Given, The equation of the line of best fit:
`y=3.8x+14.94` (which gives the predicted score.)

Time spent in studying of 12 hours i.e. at x=12, observed y= 70

Predicted y =
`3.8(12)+14.94=60.5`

Residual =Observed y - predicted y

= 70-60.5

= 9.5

Time spent in studying of 18 hours i.e. at x=18, observed y= 75

Predicted y =
`3.8(18)+14.94=83.34`

Residual = Observed y - predicted y

= 75-83.34

= -8.34

Time spent in Observed Predicted Residual

studying (x) midterm score midterm score

12 70 60.5 9.5

18 75 83.34 -8.34