Table 6: Regression equation of variance analysis of the lower beam. 
 Source of variance 
Sum of squares  Freedom of motion  Mean square  F ratio  Significance 
 Regression  150.5780  6  25.1000  145.7610 
**
 Residual error  3.0990  18  0.1722    Sum  153.6770  24    


regression equation is remarkable.
