A sample of 12 measurements has a mean of 34 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 34 each.
A. Find the mean of the sample of 14 measurements.
Mean =
B. Find the standard deviation of the sample of 14 measurements.
Standard Deviation =
3 answers
Since the two additional scores = the mean, the mean and the standard deviation will not change.
WRONG!
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2 answers