如何計算下列每格標準差呢~~??~~急~

1.450.83.612.52.751.11.350.93.21.750.781.152.331.82.950.91.452.051.732.371.862.333.50.673.11.840.972.67有1排30ㄍ數字~~請問可以計算每一ㄍ數字ㄉ標準差~~並告知如何計算~??謝謝
(1) 共 N = 30 個數字(2) 總合 S = 57.82(3) 平均 M = 1.9273    x-M    (x-M)2１ -0.4773 0.2278 ２ -1.1273 1.2709 ３  1.6727 2.7978 ４ -0.9273 0.8599 ５  0.5727 0.3279 ６  0.8227 0.6768 ７ -0.8273 0.6845 ８ -0.5773 0.3333 ９ -1.0273 1.0554 10  1.2727 1.6197 11 -0.1773 0.0314 12 -1.1473 1.3164 13 -0.7773 0.6042 14  0.4027 0.1621 15 -0.1273 0.0162 16  1.0227 1.0458 17 -1.0273 1.0554 18 -0.4773 0.2278 19  0.1227 0.0150 20 -0.2273 0.0517 21  1.0727 1.1506 22  0.4427 0.1960 23 -0.0673 0.0045 24  0.4027 0.1621 25  1.5727 2.4733 26 -1.2573 1.5809 27  1.1727 1.3751 28 -0.0873 0.0076 29 -0.9573 0.9165 30  0.7427 0.5516 －－－－－－－－－           0.7600√0.7600 = 0.8718
X(X-μ)(X-μ)^2Raw Data1.45-0.4773333330.2278471110.8-1.1273333331.2708804443.61.6726666672.7978137781-0.9273333330.8599471112.50.5726666670.3279471112.750.8226666670.6767804441.1-0.8273333330.6844804441.35-0.5773333330.3333137780.9-1.0273333331.0554137783.21.2726666671.6196804441.75-0.1773333330.0314471110.78-1.1473333331.3163737781.15-0.7773333330.6042471112.330.4026666670.1621404441.8-0.1273333330.0162137782.951.0226666671.0458471110.9-1.0273333331.0554137781.45-0.4773333330.2278471112.050.1226666670.0150471111.7-0.2273333330.05168044431.0726666671.1506137782.370.4426666670.1959537781.86-0.0673333330.0045337782.330.4026666670.1621404443.51.5726666672.4732804440.67-1.2573333331.5808871113.11.1726666671.3751471111.84-0.0873333330.0076271110.97-0.9573333330.9164871112.670.7426666670.551553778VAR = 0.78615816VARP = 0.7599529變異數STDEV =0.8866556STDEVAP =0.8717528標準差Avg=μ1.927333333(X-μ)(X-μ)^2　Sum=ΣX57.82total V