Question 5 - Chapter 14 Class 9 Statistics (Important Question)

Last updated at Dec. 13, 2024 by

Ex 14.4, 5 - Find mean salary of 60 workers of a factory - Ex 14.4

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Question 5 Find the mean salary of 60 workers of a factory from the following table: Salary (in Rs) Number of workers 3000 16 4000 12 5000 10 6000 8 7000 6 8000 4 9000 3 10000 1 Total 60 3000 × 16 = 48000 4000 × 12 = 48000 5000 × 10 = 50000 6000 × 8 = 48000 7000 × 6 = 42000 8000 × 4 = 32000 9000 × 3 = 27000 10000 × 1 = 10000 ∑▒𝑓i𝑥i = 305000 Mean(𝑥 ̅) = (∑▒𝑓𝑖𝑥𝑖 " " )/(∑▒𝑓𝑖 " " ) "= " 305000/60 = 5083.33

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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 and Computer Science at Teachoo