CHAPTER5
Calculating Descriptive Statistics: Measures of Dispersion
In This Chapter
- Calculating the range of a sample
- Calculating the variance and standard deviation of a sample and population
- Calculating the variance and standard deviation of grouped data
- Using measures of relative position to identify outliers
- Using Excel to calculate measures of dispersion
In Chapter 4, we calculated measures of central tendency by summarizing our data set into a single value. But in doing so, we lost information that could be useful. For the video game example, if the only information I provided you was that the mean of my sample was 6.6 hours, you would ...
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