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batchchk
2006 Nov 07
1
Better way to create tables of mean & standard deviations
...09503 30
Lab 6 2 597.8699 62.40710 30
Lab 7 1 584.6934 74.66537 30
Lab 7 2 620.3263 54.34871 30
Lab 8 1 631.4555 74.34480 30
Lab 8 2 623.7419 56.42492 30
Currentley I'm using:
temp <- summary.aggregate(data.ceramic$Y,"Lab",by=list(data.ceramic$Lab,data.ceramic$Batch))
batchcnt <- c(1,2)
print(data.frame(Batc=batchcnt,temp))
But that produces this output:
Batc mean stdev n
Lab 1 1 686.7179 53.37582 30
Lab 2 2 695.8710 62.08583 30
Lab 3 1 654.5317 94.19746 30
Lab 4 2 702.9095 51.44984 30
Lab 5 1 676.2975 69.13784 30
Lab 6 2 692.19...