How to calculate variance step by step? Step 1. Calculate the mean of the given numbers. Step 2. Then for each number, subtract the mean and find the square of the difference. Step 3.
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For the purpose of solving questions, the formula for variance is given by: V a r ( X) = E [ ( X – μ) 2] Put into words; this means that variance is the expectation of the squared deviation of a
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There are two formulas to calculate variance: Variance % = Actual / Forecast – 1. or. Variance $ = Actual – Forecast. In the following paragraphs
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