标准差计算公式表1

代表值代表值2Σ代表值2Σ代表值平均值2 x x^2A=SUM(x^2)SUM(x)B=(SUM(x)/n)^2n 47.22227.84440641.16-27411173.91890680 512601438413.32-2788.21173.918906

47.92294.41435812.32-2839.21173.918906

41.11689.21433517.91-2887.11173.918906

47.62265.76431828.7-2928.21173.918906

50.52550.25429562.94-2975.81173.918906

52.22724.84427012.69-3026.31173.918906

43.21866.24424287.85-3078.51173.918906

42.91840.41422421.61-3121.71173.918906

44.71998.09420581.2-3164.61173.918906 441936418583.11-3209.31173.918906

42.61814.76416647.11-3253.31173.918906

45.72088.49414832.35-3295.91173.918906

44.92016.01412743.86-3341.61173.918906

50.32530.09410727.85-3386.51173.918906

47.12218.41

43.91927.21405979.35-3483.91173.918906

40.71656.49

37.51406.25402395.65-3568.51173.918906

34.31176.49

31.1967.21399812.91-3640.31173.918906

27.9778.41

24.7610.09398067.29-3699.31173.918906

21.5462.25

18.3334.89396994.95-3745.51173.918906

15.1228.01

11.9141.61396432.05-3778.91173.918906

8.775.69

5.530.25396214.75-3799.51173.918906

2.3 5.29

-0.90.81396179.21-3807.31173.918906

-4.116.81

-7.353.29396161.59-3802.31173.918906

-10.5110.25

-13.7187.69395998.05-3784.51173.918906

-16.9285.61

-20.1404.01395524.75-3753.91173.918906

-23.3542.89

-26.5702.25394577.85-3710.51173.918906

-29.7882.09

-32.91082.41392993.51-3654.31173.918906

-36.11303.21

-39.31544.49390607.89-3585.31173.918906

-42.51806.25

-45.72088.49387257.15-3503.51173.918906 -48.92391.21

-52.12714.41382777.45-3408.91173.918906 -55.33058.09

-58.53422.25377004.95-3301.51173.918906 -61.73806.89

-64.94212.01369775.81-3181.31173.918906 -68.14637.61

-71.35083.69360926.19-3048.31173.918906 -74.55550.25

-77.76037.29350292.25-2902.51173.918906 -80.96544.81

-84.17072.81337710.15-2743.91173.918906 -87.37621.29

-90.58190.25323016.05-2572.51173.918906 -93.78779.69

-96.99389.61306046.11-2388.31173.918906 -100.110020.01

-103.310670.89286636.49-2191.31173.918906 -106.511342.25

-109.712034.09264623.35-1981.51173.918906 -112.912746.41

-116.113479.21239842.85-1758.91173.918906 -119.314232.49

-122.515006.25212131.15-1523.51173.918906 -125.715800.49

-128.916615.21181324.41-1275.31173.918906 -132.117450.41

-135.318306.09147258.79-1014.31173.918906 -138.519182.25

-141.720078.89109770.45-740.51173.918906 -144.920996.01

-148.121933.6168695.55-453.91173.918906 -151.322891.69

-154.523870.2523870.25-154.51173.918906

[(Σ代表值2-n*平均值2)/(n-1)]1/2

[(A-n*B)/(n-1)]^(1/2)

66.24920802

注：标准

差小于2.5

时取2.5