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Measures of Central Tendency
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Module 1 Lesson 2
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When is the mean the best measure of central tendency?
The mean is usually the best measure of central tendency to use when your data distribution is continuous and symmetrical, such as when your data is normally distributed.
When is the mode the best measure of central tendency?
The mode is the least used of the measures of central tendency and can only be used when dealing with nominal data.
When is the median the best measure of central tendency?
The median is usually preferred to other measures of central tendency when your data set is skewed (i.e., forms a skewed distribution) or you are dealing with ordinal data
What is the most appropriate measure of central tendency when the data has outliers?
The median is usually preferred in these situations because the value of the mean can be distorted by the outliers
In a normally distributed data set, which is greatest: mode, median or mean?
If the data set is perfectly normal, the mean, median and mean are equal to each other (i.e., the same value).
For any data set, which measures of central tendency have only one value?
The median and mean can only have one value for a given data set. The mode can have more than one value
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