The measures of central tendency
are...
mean - the average of
the numbers in the data
median
- the middle number when the data is ordered from least to
greatest
mode - the number
that occurs the most often in a set of data
Data can have
symmetric distribution, a positively skewed distribution, or a negatively
skewed distribution.
symmetric distribution
- the mean, median, and mode are
equal
positively skewed
distribution - the mean is greater than the median, which is greater than
the mode
negatively skewed
distribution - the mean is less than the median, which is less than the
mode
In summary...
* in a
symmetric distribution, the mode is in the center
* in a
positively skewed distribution, the mode is on the left
*
in a negatively skewed distribution, the mode is on the right
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