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A company is introducing a job evaluation scheme. Points (x) will be awarded to each job based on the qualifications and skills needed and the level of responsibility. Pay (£y) will then be allocated to each job according to the number of points awarded.Before the scheme is introduced, a random sample of 8 employees was taken and the linear regression equation of pay on points was y = 4.5x – 47. (a) Describe the correlation between points and pay.

Sagot :

Let's take for example values for x and find its corresponding value for y.

For x = 5

[tex]y=4.5(5)-47=22.5-47=-24.5[/tex]

For x = 19

[tex]y=4.5(19)-47=85.5-47=38.2[/tex]

Therefore,

Answer: the correlation between points and pay is positive

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