Measures of Central Tendency
Mean, median, mode and range; which measure to use and outlier effects.
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Mean
Finding and interpreting the arithmetic mean as a balance point for a data set.
Median
Finding and interpreting the middle value of an ordered data set, including even-sized sets.
Mode
Identifying and interpreting the most frequent value or values in a data set.
Range
Measuring the spread of a data set using the difference between its greatest and least values.
Outliers and Choosing a Measure
Comparing mean, median, and mode to decide which measure best represents data when outliers are present.