Chapter 3
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which of the following are important properties of the arithmetic mean?
I.E. the sum of the deviations is zero all of the values in the data are used in calculating the mean there is only one mean for a set of data
which of the following are used to measure dispersion?
range standard deviation variance
the population mean is:
the arithmetic mean of the values in the population
the median is defined as
the midpoint of the values after they have been arranged in rank order
when you calculate the sample mean, you divide the sum of the values in the sample by
the number of observations in the sample
