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Solution
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Solution provided by AtoZmath.com
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Mean deviation about mean for ungrouped data calculator
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Find Mean deviation about mean for of the following observations.
 1. 85,96,76,108,85,80,100,85,70,95
2. 3,13,11,11,5,4,2
3. 3,23,13,11,15,3,5,4,2
4. 69,66,67,69,64,63,65,68,72
5. 4,14,12,16,6,3,1,2,3
6. 73,70,71,73,68,67,69,72,76,71
7. 10,50,30,20,10,20,70,30
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Example1. Find Mean deviation about MEAN from the following data
`85,96,76,108,85,80,100,85,70,95`Solution:Mean `bar x = (sum x)/n` `=(85 + 96 + 76 + 108 + 85 + 80 + 100 + 85 + 70 + 95)/10` `=880/10` `=88` | `x` | `|x - bar x| = |x - 88|` | | 85 | 3 `|85-88|=3`
`|x - 88|` | | 96 | 8 `|96-88|=8`
`|x - 88|` | | 76 | 12 `|76-88|=12`
`|x - 88|` | | 108 | 20 `|108-88|=20`
`|x - 88|` | | 85 | 3 `|85-88|=3`
`|x - 88|` | | 80 | 8 `|80-88|=8`
`|x - 88|` | | 100 | 12 `|100-88|=12`
`|x - 88|` | | 85 | 3 `|85-88|=3`
`|x - 88|` | | 70 | 18 `|70-88|=18`
`|x - 88|` | | 95 | 7 `|95-88|=7`
`|x - 88|` | | --- | --- | | 880 | 94 |
Mean deviation of Mean `delta bar x = (sum |x - bar x|)/n` `delta bar x = 94/10` `delta bar x = 9.4`
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