Regression Quiz

What is the basic definition of linear regression?

• A method that functions to predict the influence of two or more specific functional variables.

• A statistical method that tests the extent of the causal relationship between the independent variable (X) and the dependent variable (Y).

• A statistical method that involves more than one independent variable or predictor against one dependent variable.

• A statistical technique used to develop a model that can predict the value of a dependent variable (Y) based on the value of an independent variable (X)

What is the simplest type of linear regression analysis?

• Simple Linear Regression

• Multiple Linear Regression

• Cross Section

• Time Series

What is simple linear regression used for?

• To evaluate the direction and significance of the linear relationship between two variables

• To predict the value of a dependent variable (Y) based on more than one independent variable.

• To test the extent of the causal relationship between the independent variable (X) and the dependent variable (Y)

• To perform a multiple linear regression analysis.

What are the steps to perform a simple linear regression analysis?

• Determine the purpose, identify causal factors, collect data, calculate X², Y², XY, and create an equation model.

• Determine the purpose, identify effect variables, collect data, calculate X², Y², XY, and create an equation model.

• Determine the purpose, identify independent variables, collect data, calculate X², Y², XY, and create an equation model.

• Determine the purpose, identify dependent variables, collect data, calculate X², Y², XY, and create an equation model.

What is the general form of a linear regression equation?

• Y = a + bX

• Y = a + bX + cX²

• Y = a + bX + cX² + dX³

• Y = a + bX + cX² + dX³ + eX⁴

What is multiple linear regression used for?

• To test the extent of the causal relationship between the independent variable (X) and the dependent variable (Y).

• To predict the value of a dependent variable (Y) based on more than one independent variable.

• To evaluate the direction and significance of the linear relationship between two variables.

• To perform a simple linear regression analysis.

What are the steps to perform a multiple linear regression analysis?

• Determine the purpose, identify causal factors, collect data, calculate X₁², X₂²,..., Xₙ², Y², X₁Y, X₂Y,..., XₙY, and create an equation model.

• Determine the purpose, identify effect variables, collect data, calculate X₁², X₂²,..., Xₙ², Y², X₁Y, X₂Y,..., XₙY, and create an equation model

• Determine the purpose, identify independent variables, collect data, calculate X₁², X₂²,..., Xₙ², Y², X₁Y, X₂Y,..., XₙY, and create an equation model

• Determine the purpose, identify dependent variables, collect data, calculate X₁², X₂²,..., Xₙ², Y², X₁Y, X₂Y,..., XₙY, and create an equation model

What is the general form of a multiple linear regression equation?

• Ŷ = b₀ + b₁X₁ + b₂X₂ + ... + bₙXₙ + cX₁² + dX₂³

• Ŷ = b₀ + b₁X₁ + b₂X₂ + ... + bₙXₙ + cX₁²

• Ŷ = b₀ + b₁X₁ + b₂X₂ + ... + bₙXₙ

• Ŷ = b₀ + b₁X₁ + b₂X₂ + ... + bₙXₙ + cX₁² + dX₂³ + eX₃⁴

What are the tests used in linear regression analysis?

• Linearity test, normality test, heteroscedasticity test, independence test, and multicollinearity test

• Linearity test, normality test, multicollinearity test, autocorrelation test, and heteroscedasticity test

• Linearity test, normality test, multicollinearity test, autocorrelation test, and homoscedasticity test.

• Linearity test, normality test, heteroscedasticity test, independence test, and no multicollinearity test.

What is the percentage of Shopee Live live streaming marketplace in the last 3 months based on previous presentations?

• 61%

• 35%

• 88%

• 89%