1. 1 Simple Regression – Example #2 t-test df = n – 2

2. 2 Example #2 XY 310 712 819 1218 1424 1725 1830 2340 2540 3045

3. 3 Example #2 – Data Table xyx2x2 y2y2 xy 310910030 7124914484 81964361152 1218144324216 1424196576336 1725289625425 1830324900540 23405291,600920 25406251,6001,000 30459002,0251,350  = 157 2633,1298,2555,053

4. 4 From Example #2 Data Table  x i = 157;  y i = 263;  x i 2 = 3,129;  y i 2 = 8,255;  x i y i = 5,053.

5. 5 #2) The Basic Values

6. 6 #2) The Line Parameters

7. 7 Example #2 - Summary

8. 8 Example #2 – Confidence Intervals – 95%

9. 9 #2) Regression Analysis Output