Math topic中文

Interpreting product moment correlation coefficient

Interpreting the product moment correlation coefficient $r$ (in particular, values close to $-1$ , $0$ and $1$ ).

Practice questions

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23Research is being carried out into how the concentration of a drug in the bloodstream varies with time, measured from wh…
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26Data is gathered on how exam scores, $y$ , vary with the number of hours, $x$ , students spent studying for Mathematics ea…
27It is believed that there is a correlation between the number of fogging sessions and the number of new dengue cases. To…
28The following scatter diagrams with 5 data points each have product moment correlation coefficients $-0.7$ , $0$ , $1$ , no…