正态分布概率密度与累积概率的比较
X f(X)F(X)均数标准差-40.000134
-3.90.000199
-3.80.000292
-3.70.000425
-3.60.000612
-3.50.000873
-3.40.001232
-3.30.001723
-3.20.002384
-3.10.003267
-30.004432
-2.90.005953
-2.80.007915
-2.70.010421
-2.60.013583
-2.50.017528
-2.40.022395
-2.30.028327
-2.20.0354750.013903448
-2.10.0439840.017864421
-20.0539910.022750132
-1.90.0656160.02871656
-1.80.078950.035930319
-1.70.0940490.044565463
-1.60.1109210.054799292
-1.50.1295180.066807201
-1.40.1497270.080756659
-1.30.1713690.096800485
-1.20.1941860.11506967
-1.10.2178520.135666061
-10.2419710.158655254
-0.90.2660850.184060125
-0.80.2896920.211855399
-0.70.3122540.241963652
-0.60.3332250.274253118
-0.50.3520650.308537539
-0.40.368270.344578258
-0.30.3813880.382088578
-0.20.3910430.420740291
-0.10.3969530.460172163
00.3989420.5
0.10.3969530.539827837
0.20.3910430.579259709
0.30.3813880.617911422
0.40.368270.655421742
0.50.3520650.691462461
0.60.3332250.725746882 0.70.3122540.758036348 0.80.2896920.788144601 0.90.2660850.815939875
10.2419710.841344746 1.10.2178520.864333939 1.20.1941860.88493033 1.30.1713690.903199515 1.40.1497270.919243341 1.50.1295180.933192799 1.60.1109210.945200708 1.70.0940490.955434537 1.80.078950.964069681 1.90.0656160.97128344
20.0539910.977249868 2.10.0439840.982135579 2.20.0354750.986096552 2.30.0283270.98927589 2.40.0223950.991802464 2.50.0175280.993790335 2.60.0135830.995338812 2.70.0104210.996533026 2.80.0079150.99744487 2.90.0059530.998134187
30.0044320.998650102 3.10.0032670.999032397 3.20.0023840.999312862 3.30.0017230.999516576 3.40.0012320.999663071 3.50.0008730.999767371 3.60.0006120.999840891 3.70.0004250.9998922 3.80.0002920.999927652 3.90.0001990.999951904
40.0001340.999968329