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Chapter 3: Measures of Variability
Remarks:
Recall from Chapter 1 that sample values are obtained from a population. In
later chapters you will see that we use the sample mean and the sample
variance (standard deviation) to estimate the population mean and the
population variance (standard deviation), respectively. As a matter of fact,
we can use any of the computed statistics to estimate the corresponding
population parameter.
Summary
The descriptive statistics discussed in this chapter can be investigated
through
Technology
Again, care should always be taken when computing these measures. Also,
care should be taken when using the technology. With regards to the
technology, the results will depend on the routine coded into the technology.