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OpenStudy (anonymous):
Find the variance of the sample data set. 127 135 128 131 133 127 122 A. 2.0 B. 4.4 C. 19.0 D. 4.0
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OpenStudy (anonymous):
@rainbow.bubbles
OpenStudy (anonymous):
Order the values: 122, 127, 127, 128, 131, 133, 135
OpenStudy (anonymous):
i did that
OpenStudy (anonymous):
19 is your answer! :)
OpenStudy (anonymous):
can you explain how ?
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OpenStudy (anonymous):
\[s^2= \frac{ 1 }{ n-1 } \sum_{i=1}^{n}(x _{i} - x)^2\]
OpenStudy (anonymous):
OpenStudy (anonymous):
so just follow that equation ?
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