Page 180 - Statistics and Data Analysis in Geology

APPENDIX

Table A.l. Cumulative probabilities for the standardized normal distribution. Z-scores
are standard deviations from the mean. Probabilities are cumulative areas under
the normal distribution. Especially useful critical values shown in bold italics.

Z P Z P Z P Z P
-3.00 0.0013 -1.55 0.0606 0.05 0.5199 1.64 0.9500
-2.95 0.0016 -1.50 0.0668 0.10 0.5398 1.65 0.9505
-2.90 0.0019 -1.45 0.0735 0.15 0.5596 1.70 0.9554
-2.85 0.0022 -1.40 0.0808 0.20 0.5793 1.75 0.9599
-2.80 0.0026 -1.35 0.0885 0.25 0.5987 1.80 0.9641
-2.75 0.0030 -1.30 0.0968 0.30 0.6179 1.85 0.9678
-2.70 0.0035 -1.28 0.1000 0.35 0.6368 1.90 0.9713
-2.65 0.0040 -1.25 0.1056 0.40 0.6554 1.95 0.9744
-2.60 0.0047 -1.20 0.1151 0.45 0.6736 1.96 0.9750
-2.57 0.0050 -1.15 0.1251 0.50 0.6915 2.00 0.9772
-2.55 0.0054 -1.10 0.1357 0.55 0.7088 2.05 0.9798
-2.50 0.0062 -1.05 0.1469 0.60 0.7257 2.10 0.9821
-2.45 0.0071 -1.00 0.1587 0.65 0.7422 2.15 0.9842
-2.40 0.0082 -0.95 0.1711 0.70 0.7580 2.20 0.9861
-2.35 0.0094 -0.90 0.1841 0.75 0.7734 2.25 0.9878
-2.33 0.0100 -0.85 0.1977 0.80 0.7881 2.30 0.9893
-2.30 0.0107 -0.80 0.2119 0.85 0.8023 2.33 0.9900
-2.25 0.0122 -0.75 0.2266 0.90 0.8159 2.35 0.9906
-2.20 0.0139 -0.70 0.2420 0.95 0.8289 2.40 0.9918
-2.15 0.0158 -0.65 0.2578 1.00 0.8413 2.45 0.9929
-2.10 0.0179 -0.60 0.2743 1.05 0.8531 2.50 0.9938
-2.05 0.0202 -0.55 0.2912 1.10 0.8643 2.55 0.9946
-2.00 0.0228 -0.50 0.3085 1.15 0.8749 2.57 0.9950
-1.96 0.0250 -0.45 0.3264 1.20 0.8849 2.60 0.9953
-1.95 0.0256 -0.40 0.3446 1.25 0.8944 2.65 0.9960
-1.90 0.0287 -0.35 0.3632 1.28 0.9000 2.70 0.9965
-1.85 0.0322 -0.30 0.3821 1.30 0.9032 2.75 0.9970
-1.80 0.0359 -0.25 0.4013 1.35 0.9115 2.80 0.9974
-1.75 0.0401 -0.20 0.4207 1.40 0.9192 2.85 0.9978
-1.70 0.0446 -0.15 0.4404 1.45 0.9265 2.90 0.9981
-1.65 0.0495 -0.10 0.4602 1.50 0.9332 2.95 0.9984
-1.64 0.0500 -0.05 0.4801 1.55 0.9394 3.00 0.9987
-1.60 0.0548 0.00 0.5000 1.60 0.9452