Methods of Calculating Standard Deviation in Discrete Series
- Actual Mean Method
- Direct Method
- Short-cut Method or Assumed Mean Method
- Step Deviation Method
Table of Content
- Methods of Calculating Standard Deviation in Discrete Series
- 1. Actual Mean Method
- Example
- 2. Direct Method
- Example
- 3. Short-Cut Method or Assumed Mean Method
- Example
- 4. Step Deviation Method
- Example
Standard Deviation in Discrete Series
A scientific measure of dispersion that is widely used in statistical analysis of a given set of data is known as Standard Deviation. Another name for standard deviation is Root Mean Square Deviation. Standard Deviation is denoted by a Greek Symbol σ (sigma). Under this method, the deviation of values is taken from the arithmetic mean of the given set of data. Standard Deviation can be calculated in three different series; viz., Individual, Discrete, and Frequency Distribution or Continuous Series.