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\(\pi\)
e
\(\frac{a}{b}\)
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→
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\(\sqrt{\,}\)
\(a^{b}\)
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\(\div\)
log
ln
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\(\times\)
cos
cos⁻¹
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sin
sin⁻¹
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tan
tan⁻¹
The following table shows the data for two quantitative variables, \(X\) and \(Y\).
\(X\)
2
4
6
8
10
\(Y\)
5
12
18
26
31
Plot these points on a scatter diagram.
Calculate Pearson's correlation coefficient, \(r\), with calculator.
Describe the correlation between variable \(X\) and variable \(Y\) in terms of direction and strength.
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