Question 5 - Mean - Chapter 12 Class 9 Statistics

Last updated at August 14, 2026 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 ร— 16 = 48000 4000 ร— 12 = 48000 5000 ร— 10 = 50000 6000 ร— 8 = 48000 7000 ร— 6 = 42000 8000 ร— 4 = 32000 9000 ร— 3 = 27000 10000 ร— 1 = 10000 โˆ‘โ–’๐‘“i๐‘ฅi = 305000 Mean(๐‘ฅ ฬ…) = (โˆ‘โ–’๐‘“๐‘–๐‘ฅ๐‘– " " )/(โˆ‘โ–’๐‘“๐‘– " " ) "= " 305000/60 = 5083.33

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