# Calculate Standard Deviation B.Ed Notes

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## Calculate Standard Deviation

Standard Deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the value tends to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.

Question: Calculate the Standard Deviation of the following scores: 52, 50, 56, 68, 65, 62, 57, 70

### Calculation of Standard Deviation

Mean = (Sum of all the observations)/Total number of observations

Mean = 482/8 = 60

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### Conclusion

• The standard deviation can be denoted as σ or Sigma.
• Standard deviation is regarded as the most stable and reliable measure of variability as it employs a mean for its computation.
• Standard deviation gives the standard answers and avoids fluctuations or deviations.