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Ex 15.1, 2 - Find mean deviation about mean - Chapter 15 - Mean deviation about mean - Ungrouped

  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
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Ex 15.1, 2 Find the mean deviation about the mean for the data 38, 70, 48, 40, 42, 55, 63, 46, 54, 44 Mean of the given data = ๐‘†๐‘ข๐‘š ๐‘œ๐‘“ ๐‘Ž๐‘™๐‘™ ๐‘ก๐‘’๐‘Ÿ๐‘š๐‘ ๏ทฎ๐‘‡๐‘œ๐‘ก๐‘Ž๐‘™ ๐‘›๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘ก๐‘’๐‘Ÿ๐‘š๐‘ ๏ทฏ ๐‘ฅ๏ทฏ = 38 + 70 + 48 + 40 + 42 + 55 + 63 + 46 + 54 + 44๏ทฎ10 ๏ทฏ = 500๏ทฎ10๏ทฏ = 50 Mean deviation about mean = ๏ทฎ๏ทฎ ๐‘ฅ๐‘– โˆ’ ๐‘ฅ๏ทฏ๏ทฏ๏ทฏ๏ทฎ10๏ทฏ = 84๏ทฎ10๏ทฏ = 8.4

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