IP AMaths Notes (Upper Sec, Year 3-4): 20) Statistics — Standard Deviation

Q: What does IP AMaths Notes (Upper Sec, Year 3-4): 20) Statistics - Standard Deviation cover?
A: Compute mean, variance, and standard deviation for raw and grouped data in IP AMaths.

Standard deviation quantifies spread. Handle both raw datasets and grouped frequencies.

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Formulae

• Mean: $\bar{x} = \dfrac{\sum x}{n}$.
• Variance (population): $\sigma^2 = \dfrac{\sum (x - \bar{x})^2}{n}$