Purchase Solution

Multiple regression

Not what you're looking for?

Ask Custom Question

Thompson Machine Works purchased several new, highly sophisticated machines. The production department needed some guidance with respect to qualifications needed 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;

Variables Coefficient t-stat
Intercept 11.600 2.95
X1 0.400 1.23
X2 0.286 3.71
X3 0.112 4.10
X4 0.002 1.86

a. Write out the multiple regression equation.

b. How many independent variables are there?

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

Purchase this Solution

Solution Summary

In this solution, the computer output from a Multiple regression analysis is given. From the regression output, we find the regression equation, describe the variables, and decide if some of the variables should be eliminated from the equation.

Solution Preview

Please see the attached Word document. In this solution, the computer ...

Purchase this Solution

Free BrainMass Quizzes
Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.