Example 1 - Find mean deviation about mean 6, 7, 10, 12  - Mean deviation about mean - Ungrouped

  1. Chapter 15 Class 11 Statistics
  2. Serial order wise
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Example 1 Find the mean deviation about the mean for the following data: 6, 7, 10, 12, 13, 4, 8, 12 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 = 6 + 7 + 10 + 12 + 13 + 4 + 8 + 12๏ทฎ8๏ทฏ = 72๏ทฎ8๏ทฏ = 9 Mean deviation about mean = ๏ทฎ๏ทฎ ๐‘ฅ๐‘– โˆ’ ๐‘ฅ๏ทฏ๏ทฏ๏ทฏ๏ทฎ8๏ทฏ = 22๏ทฎ8๏ทฏ = 2.75

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