BESC 3010, Chapter 9 Questions and
Answers | Latest Update | 2024/2025 |
Graded A+
What is the purpose of conducting a regression analysis?
A) To examine relationships between two variables
B) To predict the dependent variable based on one or more independent variables
C) To test hypothes...
BESC 3010, Chapter 9 Questions and
Answers | Latest Update | 2024/2025 |
Graded A+
What is the purpose of conducting a regression analysis?
A) To examine relationships between two variables
B) To predict the dependent variable based on one or more independent variables
C) To test hypotheses about categorical data
D) To summarize data characteristics
✔✔B) To predict the dependent variable based on one or more independent variables
Which term refers to the change in the dependent variable for each one-unit change in the
independent variable?
A) Intercept
B) Residual
C) Slope
D) Coefficient of determination
✔✔C) Slope
1
,What does the intercept represent in a regression equation?
A) The average of the dependent variable
B) The expected value of the dependent variable when all independent variables are zero
C) The change in the dependent variable for each unit change in the independent variable
D) The total variation in the data
✔✔B) The expected value of the dependent variable when all independent variables are zero
In regression analysis, what does a residual represent?
A) The predicted value of the dependent variable
B) The difference between the observed and predicted values of the dependent variable
C) The overall mean of the dependent variable
D) The error variance of the model
✔✔B) The difference between the observed and predicted values of the dependent variable
What does R-squared measure in a regression model?
A) The strength of the correlation between two variables
B) The proportion of variance in the dependent variable explained by the independent variables
C) The number of predictors in the model
2
, D) The total sample size
✔✔B) The proportion of variance in the dependent variable explained by the independent
variables
Which type of regression is used when the dependent variable is categorical?
A) Linear regression
B) Polynomial regression
C) Logistic regression
D) Multiple regression
✔✔C) Logistic regression
What is multicollinearity, and why is it a concern in regression analysis?
A) A situation where independent variables are independent of each other
B) When independent variables are highly correlated, making it difficult to assess their effects
C) A method to improve the regression model
D) A statistical test for significance
✔✔B) When independent variables are highly correlated, making it difficult to assess their
effects
3
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