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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


Transcript

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(𝑥 ̅) = a + h × (∑▒𝒇𝒊𝒖𝒊)/(∑▒𝒇𝒊) Where a = Assumed mean h = Class interval = 225 = 150 − 100 = 50 Also, ∑▒𝒇𝒊 = 25 ∑▒𝒇𝒊𝒖𝒊 = −7 Putting values in formula Mean(𝒙 ̅) = a + h × (∑▒𝒇𝒊𝒖𝒊)/(∑▒𝒇𝒊) 𝑥 ̅ = 225 + 50 × (−7)/25 𝑥 ̅ = 225 − 14 𝒙 ̅ = 211 Thus, Mean Daily expenditure on food is Rs 211

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.