Two-way ANOVA of EFR amplitudes with varying AM frequencies
| Source | Sum Sq | df | Mean Sq | F | Prob>F |
|---|---|---|---|---|---|
| 12 kHz | |||||
| Age | 36.4 | 4 | 9.1 | 50.27 | 3.6 × 10−32 |
| AM frequency | 336.05 | 7 | 48 | 265.15 | 1.6 × 10−122 |
| Age*AM frequency | 14.62 | 28 | 0.52 | 2.88 | 4.4 × 10−06 |
| Error | 52.87 | 292 | 0.18 | ||
| Total | 481.6 | 331 | |||
| 30 kHz | |||||
| Age | 19.25 | 4 | 4.81 | 38.42 | 8.5 × 10−26 |
| AM frequency | 262.5 | 7 | 37.5 | 299.3 | 1.1 × 10−128 |
| Age*AM frequency | 10.12 | 28 | 0.36 | 2.89 | 4.4 × 10−06 |
| Error | 36.23 | 290 | 0.12 | ||
| Total | 347.55 | 329 | |||
Shown are results of test of main effects of age and frequency of AM, as well as their interaction, on EFR amplitudes at two cochlear frequencies using two-way ANOVAs.
Sum Sq, The sum of squares due to each source of variability; df, degrees of freedom associated with each source; mean Sq, mean squares for each source; F, F-statistic; Prob>F, p-value associated with each source.