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Ex 14.1, 6 - Daily expenditure on food of 25 households - Ex 14.1

Ex 14.1, 6 - Chapter 14 Class 10 Statistics - Part 2
Ex 14.1, 6 - Chapter 14 Class 10 Statistics - Part 3

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Ex 14.1, 6 The table below shows the daily expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method. Mean(π‘₯ Μ…) = a + h Γ— (βˆ‘β–’π’‡π’Šπ’–π’Š)/(βˆ‘β–’π’‡π’Š) Where a = Assumed mean h = Class interval = 225 = 150 βˆ’ 100 = 50 Also, βˆ‘β–’π’‡π’Š = 25 βˆ‘β–’π’‡π’Šπ’–π’Š = βˆ’7 Putting values in formula Mean(𝒙 Μ…) = a + h Γ— (βˆ‘β–’π’‡π’Šπ’–π’Š)/(βˆ‘β–’π’‡π’Š) π‘₯ Μ… = 225 + 50 Γ— (βˆ’7)/25 π‘₯ Μ… = 225 βˆ’ 14 𝒙 Μ… = 211 Thus, Mean Daily expenditure on food is Rs 211

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