Sample Mean and Sample Variance
Compute the sample mean , the sample variance S2, and an estimate for the variance of the sample mean s2 = (1/ n )S2 for the following sample:
18, 21, 23, 19, 20, 21, 20, 19, 20, 17
Use the method of Example 6.1.
Example 6.1
Computation of the sample mean and variance from data