Table III.
ANOVA results.
| Source | Sum of squares | Degrees of freedom | Mean square | Foa | Fcrita | P-value | Significant? |
|---|---|---|---|---|---|---|---|
| A | 0.87 | 1 | 0.87 | 2.35 | 4.60 | 0.15 | |
| B | 4.26 | 1 | 4.26 | 11.45 | 4.60 | 4.5 × 10−3 | Yes |
| C | 0.14 | 1 | 0.14 | 0.39 | 4.60 | 0.54 | |
| D | 0.11 | 1 | 0.11 | 0.30 | 4.60 | 0.59 | |
| AB | 0.53 | 1 | 0.53 | 1.41 | 4.60 | 0.25 | |
| AC | 2.51 | 1 | 2.51 | 6.76 | 4.60 | 0.02 | Yes |
| AD | 0.85 | 1 | 0.85 | 2.30 | 4.60 | 0.15 | |
| BC | 0.52 | 1 | 0.52 | 1.40 | 4.60 | 0.26 | |
| BD | 1.84 | 1 | 1.84 | 4.96 | 4.60 | 0.04 | Yes |
| CD | 0.18 | 1 | 0.18 | 0.48 | 4.60 | 0.50 | |
| ABC | 1.58 | 1 | 1.58 | 4.26 | 4.60 | 0.06 | |
| ABD | 1.43 | 1 | 1.43 | 3.84 | 4.60 | 0.07 | |
| ACD | 0.29 | 1 | 0.29 | 0.79 | 4.60 | 0.39 | |
| BCD | 0.00 | 1 | 0.00 | 0.00 | 4.60 | 0.97 | |
| ABCD | 0.76 | 1 | 0.76 | 2.04 | 4.60 | 0.18 | |
| Covariate | 2.52 | 1 | 2.52 | 6.77 | 4.60 | 0.02 | Yes |
| Blocks | 1.23 | 1 | 1.23 | 3.32 | 4.60 | 0.09 | |
| Error | 5.20 | 14 | 0.37 | ||||
| Total | 24.84 | 31 |
a
Fo is referred to as the test statistic and is calculated by dividing the mean square for each effect by the mean square error. Fcrit is the critical value, based on the F-distribution, which the test statistic must be greater than for an effect to be considered significant.