Table 14 ANOVA two-way classification of occupational exposure
Source of variation | Sum of squares | Degrees of freedom | Mean sum of squares | F test | P value | F critical value |
|---|---|---|---|---|---|---|
Occupational exposure | 601.69 | 3 | 200.56 | 6.22 | 0.014 | 3.86 |
Severity grouping | 349.69 | 3 | 116.56 | 3.62 | 0.06 | 3.86 |
Error | 290.06 | 9 | 32.23 | Â | Â | Â |
Total | 1241.44 | 15 | Â | Â | Â | Â |