Reference Tables Cumulative Standard Normal Distribution – C…

Reference Tаbles Cumulаtive Stаndard Nоrmal Distributiоn - Cоmmonly-used Values p 0.999 0.995 0.99 0.975 0.95 0.9 0.8 0.75 0.7 Zp 3.09 2.576 2.326 1.96 1.645 1.282 0.842 0.674 0.524 Percentage points tα,ν of the t Distribution (ν = degrees of freedom) α = 0.40 0.25 0.10 0.05 0.025 0.01 0.005 0.025 0.001 0.0005 ν = 24 0.256 0.685 1.318 1.711 2.064 2.492 2.797 3.091 3.467 3.745 ν = 25 0.256 0.684 1.316 1.708 2.060 2.485 2.787 3.078 3.450 3.725 ν = 26 0.256 0.684 1.315 1.706 2.056 2.479 2.779 3.067 3.435 3.707 Variables Control Chart Factors Observations in Sample, n Averages Chart, A2 Averages Chart, A3 Std. Dev. Chart, B3 Std. Dev. Chart, B4 Center Line, d2 Range Chart, D3 Range Chart, D4 2 1.880 2.659 0 3.267 1.128 0 3.267 3 1.023 1.954 0 2.568 1.693 0 2.574 4 0.729 1.628 0 2.266 2.059 0 2.282 5 0.577 1.427 0 2.089 2.326 0 2.114 6 0.483 1.287 0.030 1.970 2.534 0 2.004 7 0.419 1.182 0.118 1.882 2.704 0.076 1.924 8 0.373 1.099 0.185 1.815 2.847 0.136 1.864 9 0.337 1.032 0.239 1.761 2.970 0.184 1.816 10 0.308 0.975 0.284 1.716 3.078 0.223 1.777 15 0.223 0.789 0.428 1.572 3.472 0.347 1.653 20 0.180 0.680 0.510 1.490 3.735 0.415 1.585 25 0.153 0.606 0.565 1.435 3.931 0.459 1.541