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Find the mean and standard deviation of $(x - 1760)$. Hence use these to find the mean and standard deviation of $x$.
Mathematics 9709 · AS & A Level · Linear combinations of random variables
Linear combinations of random variables — practice question
The twelve values of $x$ are listed here:
$1761.6,\;1758.5,\;1762.3,\;1761.4,\;1759.4,\;1759.1,\;1762.5,\;1761.9,\;1762.4,\;1761.9,\;1762.8,\;1761.0$.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Take $1760$ away from each value to produce the coded data (allow up to 2 slips)” …
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