The given data is
x: 0 2 3 3 5 6
y: 39 46 52 45 62 70
Use the graphing calculator, Microsoft Excel, or similar software to find the least squares linear regression fit to the data.
The fitted data is shown in the graph below.
Answer:
The regression line is
y = 35.876 + 5.197x
The correlation coefficient of R² indicates that the curve fit is good and reasonably acceptable.
The given data versus predicted values are shown in the following table.
The outlier at x = 3 is omitted.
Answer:
x y (data) y (predicted)
--- ----------- ------------------
0 39 35.876
2 46 47.470
3 52 53.267
5 62 64.861
6 70 70.658
