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The table on the right gives the annual income for eight families, in thousands of dollars.Find the mean and standard deviation for family incomo.Family A B C D E F G HIncome 47 42 44 45 43 45 48 46The mean of the data set is thousand dollars. (Round to three decimal places as needed)

Respuesta :

We can compute the mean by;

[tex]\operatorname{mean}=\frac{47+42+44+45+43+45+48+46}{8}=45[/tex]

and the standard deviation by;

[tex]\frac{\sum ^{}_{}(x-\operatorname{mean})^2}{\sum ^{}_{}f}=\frac{28}{8}=3.5[/tex]

So the mean of the data set is 45.

The standard deviation is 3.5

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