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Nov 2007 p6 q1
2536
A summary of 24 observations of \(x\) gave the following information:
\(\Sigma(x-a) = -73.2\) and \(\Sigma(x-a)^2 = 2115\).
The mean of these values of \(x\) is 8.95.
- Find the value of the constant \(a\).
- Find the standard deviation of these values of \(x\).
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