Why is Table A given in terms of z scores rather than raw scores? Table A .00

Why is Table A given in terms of z scores rather than raw scores?

Table A

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.00 .01 .02 .03 .04 .05 .06 .07 .08 .09 0.0 00.00 00.40 00.80 01.20 01.60 01.99 02.39 02.79 03.19 03.59 0.1 03.98 04.38 04.78 05.17 05.57 05.96 06.36 06.75 07.14 07.53 0.2 07.93 08.32 08.71 09.10 09.48 09.87 10.26 10.64 11.03 11.41 0.3 11.79 12.17 12.55 12.93 13.31 13.68 14.06 14.43 14.80 15.17 0.4 15.54 15.91 16.28 16.64 17.00 17.36 17.72 18.08 18.44 18.79 0.5 19.15 19.50 19.85 20.19 20.54 20.88 21.23 21.57 21.90 22.24 0.6 22.57 22.91 23.24 23.57 23.89 24.22 24.54 24.86 25.17 25.49 0.7 25.80 26.11 26.42 26.73 27.04 27.34 27.64 27.94 28.23 28.52 0.8 28.81 29.10 29.39 29.67 29.95 30.23 30.51 30.78 31.06 31.33 0.9 31.59 31.86 32.12 32.38 32.64 32.89 33.15 33.40 33.65 33.89 1.0 34.13 34.38 34.61 34.85 35.08 35.31 35.54 35.77 35.99 36.21 1.1 36.43 36.65 36.86 37.08 37.29 37.49 37.70 37.90 38.10 38.30 1.2 38.49 38.69 38.88 39.07 39.25 39.44 39.62 39.80 39.97 40.15 1.3 40.32 40.49 40.66 40.82 40.99 41.15 41.31 41.47 41.62 41.77 1.4 41.92 42.07 42.22 42.36 42.51 42.65 42.79 42.92 43.06 43.19 1.5 43.32 43.45 43.57 43.70 43.82 43.94 44.06 44.18 44.29 44.41 1.6 44.52 44.63 44.74 44.84 44.95 45.05 45.15 45.25 45.35 45.45 1.7 45.54 45.64 45.73 45.82 45.91 45.99 46.08 46.16 46.25 46.33 1.8 46.41 46.49 46.56 46.64 46.71 46.78 46.86 46.93 46.99 47.06 1.9 47.13 47.19 47.26 47.32 47.38 47.44 47.50 47.56 47.61 47.67 2.0 47.72 47.78 47.83 47.88 47.93 47.98 48.03 48.08 48.12 48.17 2.1 48.21 48.26 48.30 48.34 48.38 48.42 48.46 48.50 48.54 48.57 2.2 48.61 2.3 48.93 48.64 48.68 48.71 48.75 48.78 48.81 48.84 48.87 48.90 48.96 48.98 49.01 49.04 49.06 49.09 49.11 49.13 49.16 2.4 49.18 49.20 49.22 49.25 49.27 49.29 49.31 49.32 49.34 49.36 2.5 49.38 49.40 49.41 49.43 49.45 49.46 49.48 49.49 49.51 49.52 2.6 49.53 49.55 49.56 49.57 49.59 49.60 49.61 49.62 49.63 49.64 49.66 49.67 49.68 49.69 49.70 49.71 49.72 49.73 49.74 49.75 49.76 49.77 49.77 49.78 49.79 49.79 49.80 49.81 2.7 49.65 2.8 49.74 2.9 49.81 49.82 49.82 49.83 49.84 49.84 49.85 49.85 49.86 49.86 3.0 49.87 3.5 49.98 4.0 49.997 5.0 49.99997