Ex 15.1, 9 - Find mean deviation about mean Income per day - Mean deviation about mean - Continuous frequency distibution

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  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
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Ex 15.1, 9 Find the mean deviation about the mean for the data. โˆ‘128โ–’๐‘“๐‘– = 50 & โˆ‘128โ–’๐‘“๐‘– ๐‘ฅ๐‘– = 17900 โˆด Mean ๐’™ย ฬ… = (โˆ‘โ–’ใ€–ใ€–๐‘“_๐‘– ๐‘ฅใ€—_๐‘– ใ€—)/๐‘“_๐‘– = 17900/50 = 358 Now, โˆ‘128โ–’๐‘“๐‘– = 50 โˆ‘128โ–’๐‘“๐‘– |๐‘ฅ๐‘– โˆ’๐’™ย ฬ… | = 7896 Mean deviation about mean = (โˆ‘โ–’ใ€– ๐‘“_๐‘– |๐‘ฅ๐‘– โˆ’๐’™ย ฬ… | ใ€—)/๐‘“_๐‘– = 7896/50 = 157.92

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