Table 7.

Mean rank difference for frequency pairs (3ms Vs 18ms Vs 48ms).

Frequency Pair		Difference in mean ranks
		3ms	18ms	48
125	250	0.2286	0.4571	1.0714
125	500	0.6143	0.7857	0.8429
125	750	0.1286	1.1143	1.2857
125	1000	0.2429	0.9286	1.2286
250	500	0.3857	0.3286	−0.229
250	750	−0.1	0.6571	0.2143
250	1000	0.0143	0.4714	0.1571
500	750	−0.486	0.3286	0.4429
500	1000	−0.371	0.1429	0.3857
750	1000	0.1143	−0.1857	−0.057