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Find the value of $n$
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
For $n$ observations of the variable $x$, it is stated that $\sum (x - 100) = 216$ and $\sum x = 2416$.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Form a correct equation that includes $\Sigma x - 100n = 216$” …
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