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Transcript

Ex 13.1, 2 Consider the following distribution of daily wages of 50 workers of a factory. Find the mean daily wages of the workers of the factory by using an appropriate method. Mean(𝑥 ̅) = a + h × (∑▒𝒇𝒊𝒖𝒊)/(∑▒𝒇𝒊) Where a = Assumed Mean h = Class interval Also, ∑▒𝒇𝒊 = 50 ∑▒𝒇𝒊𝒖𝒊 = −12 Putting values in formula Mean(𝒙 ̅) = a + h × (∑▒𝒇𝒊𝒖𝒊)/(∑▒𝒇𝒊) 𝑥 ̅ = 550 + 20 × (−12)/50 𝑥 ̅ = 550 – 4.8 𝒙 ̅ = 545.2 Therefore, mean average wage is Rs 545.2

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.