组间变异的计算好象与minitab不一样吗

10.2316
9.1487
9.1793
10.3998
10.7157
10.2742
8.2409
9.0358
10.2849
10.7525
10.2745
9.8473
10.6688
8.5990
9.1275
9.8822
9.8385
10.4531
8.5390
11.0053
9.4603
9.5264
10.8214
10.2973
10.7237
8.8796
11.8179
9.7038
9.3482
8.5307
11.0953
10.6076
9.5412
8.4318
12.1926
9.4466
11.6763
9.3254
9.5413
9.8443
9.1727
8.4604
10.2507
9.1148
10.2773
11.0428
9.2153
9.6774
9.7483
9.0666
10.8657
7.7669
10.1887
9.1097
11.0406
9.7556
8.7438
9.1227
9.9560
10.1487
9.8538
9.5404
11.7040
10.7520
9.3478
11.1245
9.3163
9.8672
10.6310
11.3319
8.7673
9.1109
10.0103
9.4136
9.5760
8.9584
9.1354
10.9238
11.5778
9.8032
10.7155
10.6762
10.9331
11.3375
9.9983
8.7607
9.7074
9.8218
10.4113
11.1440
10.4352
9.6975
7.9222
10.9928
11.1485
10.4669
11.8594
7.7723
10.5558
12.2082
9.4892
8.6070
9.9520
12.8504
9.0098
9.8224
9.4012
10.0063
11.2089
11.1594
9.7947
10.1917
9.4573
8.4688
9.5883
10.2071
9.0058
10.7338
9.1188
9.2490
10.2007
9.5961
11.5719
10.9617
11.2747
分为25groups subgroup size=5, Minitab中组间变异是如何计算的, 和rbar/d2/根号n好象不一致