# Variance and Standard Deviation

> This section covers variance and standard deviation: the spread of a list around the mean. Variance is the mean of the squared deviations. Standard deviation is √(variance), so it returns to the…

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## Full notes

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## More in Statistics

- [Cumulative Frequency Tables and Graphs (Ogives)](https://www.hlayiso.com/grade-12/mathematics/notes/statistics/cumulative-frequency-tables-and-graphs-ogives) — Previous section
- [Bivariate Data and the Scatter Plot](https://www.hlayiso.com/grade-12/mathematics/notes/statistics/bivariate-data-and-the-scatter-plot) — Next section
- [All Statistics sections](https://www.hlayiso.com/grade-12/mathematics/notes/statistics)

## Frequently asked questions

### What will I learn in "Variance and Standard Deviation"?

This section covers Variance and Standard Deviation as part of Statistics in Grade 12 Mathematics. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "Variance and Standard Deviation", are written against the official CAPS curriculum and ATP for Grade 12 Mathematics.

### What should I study after "Variance and Standard Deviation"?

Continue with the next section in Statistics, or test your understanding with the interactive quiz linked to this section.

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