11791025
Description
Quiz by Monty Leaman, updated more than 1 year ago
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Created by Monty Leaman
almost 7 years ago
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Question 1
Question
Fill in the Blank: Multiple Regression is a logical extension of linear regression that allows us to ... and assess whether adding additional variables or combination of variables (factors) to the regression will enhance the power of the regression model.
Answer
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examine the influence of a key X variable (regressor) on Y (dependent variable)
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examine the influence of multiple X variables (regressors) on Y (dependent variable)
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examine the influence of a key X variable (regressor) on Y (independent variable)
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examine the influence of multiple X variables (regressors) on Y (independent variable)
Question 2
Question
To carry out multiple regression, you must include ...
Answer
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three or more potentially useful predictors (variables)
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all predictors (variables)
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two or more potentially useful predictors (variables)
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one or more potentially useful predictors (variables)
Question 3
Question
What is factor analysis?
Answer
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A statistical method that describes the variability of observed variables, and correlates them to unobserved factors; usually in terms of a lower and higher score.
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A statistical process by which all variables are forced into a regression model (all analysed at the same time) regardless of their statistical significance
Question 4
Question
Which of the following is a statistical process by which all variables are forced into a regression model (all analysed at the same time) regardless of their statistical significance
Answer
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Simultaneous regression
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Simple linear regression
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Hierarchical regression
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Logistic regression
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