Standard deviation is the square root of variance and measures spread in the original units.
What Is Standard Deviation?
Standard deviation is the square root of variance and measures spread in the original units.
Examples of Standard Deviation
1
If variance is 9, standard deviation is 3.Formula and Key Points
Formula / rule
σ=√variance
- Know the definition and standard notation for Standard Deviation.
- Be able to recognise or compute standard deviation in a small example.
- Connect the concept to nearby topics in the same subject before using it in larger CSE problems.
Why This Matters in Computer Science
Used in data analysis, machine-learning evaluation, experiments, monitoring and performance measurement.
Related Math Terms
Standard Deviation: Frequently Asked Questions
What is Standard Deviation?
Standard deviation is the square root of variance and measures spread in the original units.
Why is Standard Deviation useful in computer science?
Used in data analysis, machine-learning evaluation, experiments, monitoring and performance measurement.