- The sample mean can be calculated as above
- The sample variance

- When the output data are of the form
for
*r = 1, 2, ..., R*

and

- The sample variance is essentially a measure of error. In
statistics, we use its square root as the
*standard error*. - Example 12.10 on page 446 (The Able-Baker carhop problem,
continued): calculate the confidence interval for Able's utilization
and average waiting time.
- Example 12.11 on page 447: the more runs, the more accurate the result is.

Meng Xiannong 2002-10-18