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Bill is taking data to calculate upper/lower control limits to monitor his current process. The data set thus far is as follows: .4, .49,.50,.44,.40, .32, .35, .38, .40, .48, .53, .58,.64. what is the mean?
1.96
3.16
3.25
4
The correct answer for mean is 3.16 for this data set
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