Formula
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2. Geometric mean `= root (n)( x_1 xx x_2 xx x_3 xx ... xx x_n )`
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Examples
1. Find Geometric mean for data `4,16`Solution:GM `=sqrt(x_1 xx x_2)`
`=sqrt(4 xx 16)`
`=sqrt(64)`
`=8`
2. Find Geometric mean for data `2,4,8`Solution:GM `=root (3)(x_1 xx x_2 xx x_3)`
`=root (3)(2 xx 4 xx 8)`
`=root (3)(64)`
`=4`
3. Find Geometric mean for data `4,8,16`Solution:GM `=root (3)(x_1 xx x_2 xx x_3)`
`=root (3)(4 xx 8 xx 16)`
`=root (3)(512)`
`=8`
4. Find Geometric mean for data `1,2,8,16`Solution:GM `=root (4)(x_1 xx x_2 xx x_3 xx x_4)`
`=root (4)(1 xx 2 xx 8 xx 16)`
`=root (4)(256)`
`=4`
5. Find Geometric mean for data `1,3,9,27,81`Solution:GM `=root (5)(x_1 xx x_2 xx x_3 xx x_4 xx x_5)`
`=root (5)(1 xx 3 xx 9 xx 27 xx 81)`
`=root (5)(59049)`
`=9`
6. Find Geometric mean for data `1,4,16,64`Solution:GM `=root (4)(x_1 xx x_2 xx x_3 xx x_4)`
`=root (4)(1 xx 4 xx 16 xx 64)`
`=root (4)(4096)`
`=8`
This material is intended as a summary. Use your textbook for detail explanation.
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