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Solution
Find mean deviation about mode {{10,3},{11,12},{12,18},{13,12},{14,3}}

Solution:
Your problem `->` mean deviation about mode {{10,3},{11,12},{12,18},{13,12},{14,3}}


`x`
`(1)`
`f`
`(2)`
`|x-Z|=|x-12|`
`(3)`
`f*|x-Z|`
`(4)=(2)xx(3)`
103 2 `|10-12|=2`
`|x - 12|`
 6 `6=3xx2`
`(4)=(2)xx(3)`
1112 1 `|11-12|=1`
`|x - 12|`
 12 `12=12xx1`
`(4)=(2)xx(3)`
1218 0 `|12-12|=0`
`|x - 12|`
 0 `0=18xx0`
`(4)=(2)xx(3)`
1312 1 `|13-12|=1`
`|x - 12|`
 12 `12=12xx1`
`(4)=(2)xx(3)`
143 2 `|14-12|=2`
`|x - 12|`
 6 `6=3xx2`
`(4)=(2)xx(3)`
------------
--`n=48`--`sum f*|x-Z|=36`


Mode :
the frequency of observation `12` is maximum (`18`)

`:. Z = 12`

Mean deviation of Mode
`delta bar x = (sum f*|x - Z|)/n`






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