n = Variance = ∑(x - x̅) 2
Chapter 13: Chapter 12 · ECONOMICS · EN medium
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n When the sample size is less than , variance = ; When n = number of observations. Example : Calculate the standard deviation from the following data by Actual Mean Method : , , , , , , , , and . Solution: Deviations from actual mean. Sl. No Values (X) X – X̅ (X – X̅) - = - = - = - - = - = - = - =- - = - =-
📖 Class 12 Economics English Medium 2024 Edition www.tntextbooks.in · Page 270
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n When the sample size is less than , variance = ; When n = number of observations. Example : Calculate the standard deviation from the following data by Actual Mean Method : , , , , , , , , and . Solution: Deviations from actual mean. Sl.
No Values (X) X – X̅ (X – X̅) - = - = - = - - = - = - = - =- - = - =-
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