Standard Deviation Calculator

Standard Deviation Calculator


4
Total Numbers
15.75
Mean (Average)
4.35
Standard deviation


18.92
Variance(Standard deviation)
3.77
Population Standard deviation
14.19
Variance(Population Standard deviation)

What is Standard Deviation Calculator ?

What is Standard Deviation ?

Standard deviation is a statistical measure of diversity or variability in a data set. A low standard deviation indicates that data points are generally close to the mean or the average value. A high standard deviation indicates greater variability in data points, or higher dispersion from the mean

Formula of Standard Deviation Calculator:

$$s=\sqrt{\frac{\sum\left(X-{\displaystyle\overline X}\right)^2}{n-1}}$$

Where

  • Is To Sum
  • X Is each Score in the distribution
  • X Is the sample mean
  • n Is the number of cases in the sqample.