Mathematics 9709 · AS & A Level · Representation of data

Representation of data — practice question

Across $n$ values of the variable $x$, it is stated that $\sum (x - 50) = 144$ and $\sum x = 944$.
(main)[3]

Determine the value of n.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Construct the equation $ x - 50n = 144$” …

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