MSIS 3223 EXAM 2 QUESTIONS WITH SOLUTIONS

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MSIS 3223 EXAM 2 QUESTIONS
WITH SOLUTIONS



Excels trend line feature cannot be used in modeling trends which include time

variables T/F - correct-answer - false




The standard error may be assumed to be large if the data are clustered close to

the regression line. T/F - correct-answer - False




A good regression model has the fewest number of explanatory variables

providing an adequate interpretation of the dependent variable T/F - correct-

answer - True

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Regression analysis is a tool for building mathematical and statistical models that

characterize relationships between a dependent variable and one or more

independent, or explanatory, variables. T/F - correct-answer - True




Simple Linear regression involves finding a linear relationship between one

independent variable, X, and one dependent variable, Y. T/F - correct-answer -

True




An increase in adjusted R2 indicates that the regression model has improved T/F -

correct-answer - True




Multiple R is another name for the sample correlation coefficient - correct-answer

- True

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An interaction occurs when the effect of one variable is dependent on another

variable T/F - correct-answer - True




In regression analysis, dependent variable can be of any type (ratio, categorical,

ordinal and interval) T/F - correct-answer - False




Which one is true?

a) R-squared is a measure of the "fit" of the line to the data

b) The value of R-squared will be between 0 and 1.

c) the larger the value of R Squared the better the fit

D) All statements are true - correct-answer - D) all statements are true




One judgmental approach for forecasting is historical analogy, in which a forecast

is obtained through a comparative analysis with a previous situation T/F - correct-

answer - True