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Choose the correct alternative:
If for a bivariate data, b_{YX} = – 1.2 and b_{XY} = – 0.3, then r = ______
Options
– 0.06
0.06
0.6
– 0.6
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Solution
– 0.6
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b_{yx} = `square`
b_{xy} = `square`
when x = 10,
`y  square = square (10  square)`
∴ y = `square`
b_{xy} . b_{yx} = ______.