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# Calculating measures of central tendency and dispersion

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In a recent survey of small bakeries in the Southeast, 10 bakeries report the following number of employees: 15, 14, 12, 19, 13, 14, 15, 18, 13, 19.

Find the mean, median, variance and standard deviation.

##### Solution Summary

The following outlines the formulas and method of calculating various measures of central tendency and dispersion for a sample, namely: mean, median, variance, and standard deviation.

##### Solution Preview

Mean = sum of all employees/ number of stores
= 15+14+12+19+13+14+15+18+13+19 / 10
= 15.2

To calculate the median, re-arrange the figures, in ascending order:
12, 13, 13, 14, 14, 15, 15, 18, ...

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.