Ｐz＝过程输出超过特殊规定值（如工程规范限）的比例，这个特殊规定值与过程均值相距为z个标准偏差单位（针对处于统计控制状态并呈现正态分布的过程）。如︰Ζ-2.17，则Ｐz＝0.0150或1.5％，在任何实际情况下
标准正态分布表
该比例为近似值。SSLXX或
Pzδz∣Ζ∣x.x0x.x1x.x2x.x34.00.000033.90.000050.000050.000040.000043.80.000070.000070.000070.000063.70.000110.000100.000100.000103.60.000160.000150.000150.000143.50.000230.000220.000220.000213.40.000340.000320.000310.000303.30.000480.000470.000450.000433.20.000690.000660.000640.000623.10.000970.000940.000900.000873.00.001350.001310.001260.001222.90.00190.00180.00180.00172.80.00260.00250.00240.00232.70.00350.00340.00330.00322.60.00470.00450.00440.00432.50.00620.00600.00590.00572.40.00820.00800.00780.00752.30.01070.01040.01020.00992.20.01390.01360.01320.01292.10.01790.01740.01700.01662.00.02280.02220.02170.02121.90.02870.02810.02740.02681.80.03590.03510.03440.03361.70.04460.04360.04270.04181.60.05480.05370.05260.05161.50.06680.06550.06430.06301.40.08080.07930.07780.07641.30.09680.09510.09340.09181.20.11510.11310.11120.10931.10.13570.13350.13140.12921.00.15870.15620.15390.15150.90.18410.18140.17880.17620.80.21190.20900.20610.20330.7
0.2420
0.2389
0.2358
0.2327
x.x40.000040.000060.000090.000140.000200.000290.000420.000600.000840.001180.00160.00230.00310.00410.00550.00730.00960.01250.01620.02070.02620.03290.04090.05050.06180.07490.09010.10750.12710.14920.17360.20050.2297
δPzzx.x5x.x6x.x7x.x8x.x90.000040.000040.000040.000030.000030.000060.000060.000050.000050.000050.000090.000080.000080.000080.000080.000130.000130.000120.000120.000110.000190.000190.000180.000170.000170.000280.000270.000260.000250.000240.000400.000390.000380.000360.000350.000580.000560.000540.000520.000500.000820.000790.000760.000740.000710.001140.001110.001070.001040.001000.00160.00150.00150.00140.00140.00220.00210.00210.00200.00190.00300.00290.00280.00270.00260.00400.00390.00380.00370.00360.00540.00520.00510.00490.00480.00710.00690.00680.00660.00640.00940.00910.00890.00870.00840.01220.01190.01160.01130.01100.01580.01540.01500.01460.01430.02020.01970.01920.01880.01830.02560.02500.02440.02390.02330.03220.03140.03070.03010.02940.04010.03920.03840.03750.03670.04950.04850.04750.04650.04550.06060.05940.05820.05710.05590.07350.07210.07080.06940.06810.08850.08690.08530.08380.08230.10560.10380.10200.10030.09850.12510.12300.12100.11900.11700.14690.14460.14230.14010.13790.17110.16850.16600.16350.16110.19770.19490.19220.18940.18670.2266
0.2236
0.2206
0.2177
0.2148
标准正态分布表
