Question

The mean of the data set (4 , 10 , 7 , 7 , 6 , 9 , 3 , 8 , 9 ) is ... (7/8/9)​

Answer 1

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The mean of the data set ( 4,10,7,7,6,9,3,8,9 ) is ( 7/8/9 ).

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$\mapsto\rm{Mean \: of \: a \: data \: = \frac{Sum \: of \: all \: the \: numbers}{Total \: number \: of \: numbers} }$

$\mapsto\rm Numbers = 4,10,7,7,6,9,3,8,9$

$\mapsto\rm Total \: number \: of \: numbers \: =9$

$\mapsto \frac{4+10+7+7+6+9+3 + 8 + 9}{9}$

$\mapsto\rm \frac{\cancel{63}}{\cancel9}$

$\mapsto\rm 7$

Therefore, the mean of the data set ( 4,10,7,7,6,9,3,8,9 ) is 7.

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