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scoundrel [369]
3 years ago
14

Of 48 orchestra members 30 are girls what ratio compares the number of boy to girls

Mathematics
1 answer:
ololo11 [35]3 years ago
3 0
You just simplify it down until to the point where you can't and it should be 3:5
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Find the standard deviation of 21, 31, 26, 24, 28, 26
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Given the dataset

x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}

We start by computing the average:

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We compute the difference bewteen each element and the average:

x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}

We square those differences:

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Finally, we take the square root of this quantity and we have the standard deviation:

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