List four pitfalls of regression
What will be an ideal response?
If the assumptions are not met, the statistical test may not be valid. Correlation does not necessarily mean causation. If multicollinearity is present, the model is still good for prediction but interpretation of the individual coefficients is questionable. Interpretation outside of the range of X values is questionable. The regression equation should not be used to predict a value of Y when X is zero. Using the F-test and concluding a linear relationship is helpful in predicting Y does not mean that this is the best relationship. A statistically significant relationship does not mean practical value.
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Escapade Inc, a travel agency in Sydney, is using a highly expensive implementation process for a short period of time. It launches the new system while the old one is still running and employees have to do their jobs twice, once on each system
Which of the following is the company using?A) parallel implementation B) phased implementation C) direct implementation D) pilot implementation
DSS use internal information as well as information from external sources
Indicate whether the statement is true or false