Statistics: employees' Salary, Years of experience, Time needed to complete task

barbsabbs

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Dec 28, 2017
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The director of a company has requested a study to evaluate some characteristics about the performance of its employees. Among the information collected, three variables were highlighted:
-Salary
-Years of experience
-Time needed to complete a task

Data were also presented on the correlation between the variables:
Corr (X, Y) = - 0.92,
Corr (X, Z) = 0.83, and
Corr (Y, Z) = - 0.54

a) Suppose that X corresponds to variable "years of experience". Which of the other variables would be reasonable to assume corresponds to Y? And which one corresponds to Z? Justify your answer.

b) Outline three scatter plots that illustrate the joint distributions of the two to two variables.

:confused:
 
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