
Linear Regression Quiz
Authored by Prerna Singh
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Professional Development
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary goal of linear regression?
Maximize correlation
Minimize standard deviation
Minimize the sum of squared residuals
Maximize R-squared
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a simple linear regression, the relationship is between:
Multiple independent variables and one dependent variable
One independent and one dependent variable
Two dependent variables
Multiple dependent variables and one independent variable
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT an assumption of linear regression?
Linearity
Homoscedasticity
Normality of independent variables
Independence of errors
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the R-squared value represent in a regression model?
The correlation coefficient
The percentage of total variation explained by the model
The residual sum of squares
The intercept term
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is typically used to estimate the coefficients in linear regression?
Maximum likelihood estimation
Gradient descent
Least squares
Bayesian estimation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when there is multicollinearity in a simple linear regression model?
The model overfits
The coefficients become unstable
The residuals are biased
It's not possible; multicollinearity occurs in multiple regression only
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which diagnostic plot is used to check for homoscedasticity in regression?
Q-Q plot
Residuals vs Fitted values
Scatterplot of Y vs X
Histogram of residuals
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