Statistics - Standard Deviation

Standard deviation is the square root of the average of squared deviations of the items from their mean. Symbolically it is represented by ${\sigma}$.

We're going to discuss methods to compute the Standard deviation for three types of series:

• Individual Data Series

• Discrete Data Series

• Continuous Data Series

Individual Data Series

When data is given on individual basis. Following is an example of individual series:

Discrete Data Series

When data is given alongwith their frequencies. Following is an example of discrete series:

Continuous Data Series

When data is given based on ranges alongwith their frequencies. Following is an example of continous series: