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Find the value of $n$ here.
Mathematics 9709 · AS & A Level · Representation of data
Representation of data — practice question
It is given that, for $n$ values of the variable $x$, $\sum (x - 200) = 446$ and $\sum x = 6846$.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A correct linear equation is formed from $\sum x$, $\sum 200$ and $\sum(x-200)$, for example $\sum x - \sum 200 = \sum(x-200)$” …
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