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prepare out the multiple regression equation using the given data.

Thompson Machine Works purchased several new, highly sophisticated machines. The production department needed some guidance with respect to qualifications essential by an operator. Four variables were listed.

X1 = Length of time employee was a machinist

X2 = Mechanical aptitude test score

X3 = Prior on-the-job rating

X4 = Age

Performance on the machine is designated Y

The following are the results of the regression analysis;

 

Independent

Variables

Coefficient

t-stat

Intercept

11.6

2.95

X1

0.4

1.23

X2

0.286

3.71

X3

0.112

4.1

X4

0.002

1.86

a) prepare down out the multiple regression equation.

b) How numerous independent variables are there?

c) Assume the sample size was very large (degrees of freedom is equal to 100), would you consider eliminating any of the independent variables?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M919927

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