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Table 1 Results of the multiple comparisons applied to RMS values (Dunn Method) The test computes statistic Q, the number of rank sums, and shows whether P < 0.05 or not, for the pair being compared. P is the probability that the null hypothesis may be rejected and so concludes that there are differences between treatments. Diff of ranks is the difference in the rank sum orders being compared. The rank sums are a measure of the difference between two treatments.

From: Texture discrimination and multi-unit recording in the rat vibrissal nerve

  Pressure level 1 Pressure level 2
Comparison Diff of Ranks Q P < 0.05 Diff of Ranks Q P < 0.05
Control vs Wood 1.500 4.743 Yes 1.800 5.692 Yes
Control vs Metal 0.340 1.075 No 1.900 6.008 Yes
Control vs Acrylic 0.960 3.036 Yes 2.300 7.273 Yes
Control vs Sandpaper 2.520 7.969 Yes 3.900 12.333 Yes
Wood vs Metal 1.160 3.668 Yes 0.100 0.316 No
Wood vs Acrylic 2.460 7.779 Yes 0.500 1.581 No
Wood vs Sandpaper 1.020 3.226 Yes 2.100 6.641 Yes
Metal vs Acrylic 1.300 4.111 Yes 0.400 1.265 No
Metal vs Sandpaper 2.180 6.894 Yes 2.000 6.325 Yes
Acrylic vs Sandpaper 3.480 11.005 Yes 1.600 5.060 Yes
  Pressure level 3 Pressure level 4
Comparison Diff of Ranks Q P < 0.05 Diff of Ranks Q P < 0.05
Control vs Wood 2.820 8.918 Yes 2.500 7.906 Yes
Control vs Metal 1.580 4.996 Yes 1.620 5.123 Yes
Control vs Acrylic 1.560 4.933 Yes 0.700 2.214 No
Control vs Sandpaper 3.940 12.459 Yes 3.680 11.637 Yes
Wood vs Metal 1.240 3.921 Yes 0.880 2.783 No
Wood vs Acrylic 1.260 3.984 Yes 1.800 5.692 Yes
Wood vs Sandpaper 1.120 3.542 Yes 1.180 3.731 Yes
Metal vs Acrylic 0.020 0.0632 No 0.920 2.909 Yes
Metal vs Sandpaper 2.360 7.463 Yes 2.060 6.514 Yes
Acrylic vs Sandpaper 2.380 7.526 Yes 2.980 9.424 Yes