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# Standard Deviation>>What does it mean?? watch

1. Here's the context it's in

1)Explain why the students should have calculated a Standard Deviation for each set of results??
2. (Original post by pinda.college)
Here's the context it's in

1)Explain why the students should have calculated a Standard Deviation for each set of results??
Standard deviation is a measure of the spread of a set of data about the mean result (which may simply be referred to as the 'average' in some cases, though this is a less precise term). The higher the standard deviation, the more spread the data.

As a very simple example, the two sets of values {1,5,9} and {4,5,6} both have the same mean (5), but the first will have a greater standard deviation as the results are more spread from the mean.
3. (Original post by Illusionary)
Standard deviation is a measure of the spread of a set of data about the mean result (which may simply be referred to as the 'average' in some cases, though this is a less precise term). The higher the standard deviation, the more spread the data.

As a very simple example, the two sets of values {1,5,9} and {4,5,6} both have the same mean (5), but the first will have a greater standard deviation as the results are more spread from the mean.
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