What are the advantages and disadvantages of standard deviation ?

Define standard deviation

Standard deviation is a measure of the amount of variation or spread of a set of values.

The main advantages of standard deviation are :

1. The standard deviation value is always fixed and well defined.
2. With the help of standard deviation, both mathematical and statistical analysis are possible.

The disadvantages of standard deviation are :

1. It doesn't give you the full range of the data.
2. It can be hard to calculate.