Mathematics · Statistics
The standard deviation (σ) of a continuous frequency distribution is given by which formula?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1σ = 1N√[N∑fixi2 + (∑fixi)3]
- 2σ = N2N√[N∑fixi + (∑fixi)2]
- 3σ = N2N√[N∑fixi - (∑fixi)2]
- 4σ = 1N√[N∑fixi2 - (∑fixi)2]✓
Correct answer
σ = 1N√[N∑fixi2 - (∑fixi)2]
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