# What is the shortcut formula for standard deviation?

## What is the shortcut formula for standard deviation?

1 | Add up all the values. Sum | 69 |
---|---|---|

13 | Add up all these squared values. Sum of Squares | 861 |

14 | Subtract Sum of Squares - Avg. Sum Squared | 180.
## How do we calculate variance?
**Find**the mean of the data set. Add all data values and divide by the sample size n.**Find**the squared difference from the mean for each data value. Subtract the mean from each data value and square the result.**Find**the sum of all the squared differences. ...**Calculate**the**variance**.
## Which of these is a merit of standard deviation?Answer. Advantages of Standard Deviation: The standard deviation is the best measure of variation. It is based on every item of the distribution. You can do ## What is difference between mean deviation and standard deviation?The ## Why mean deviation is used?
## What is the meaning of deviation in statistics?In mathematics and |

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