Sample size and CC
September 2, 2008 at 2:09 am #50858
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How do I reconcile sample size with control charting? For example, if i decide to write up a data collection plan so as to determine the before and after effects of a CI effort using a 2 sample T, and use MTB for the resulting sample size calculation, do I then take this sample size calculation and make it divisible by CC sample size?
For example, a required sample size for a 2 sample T (n=100) is then subgrouped into (n=4) for a total of 25 data points for the CC…and then continue with the analysis? Thanks!0
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