Week 3 Quiz

1) Which of these are not an interpretation of a scatter plot?

• Postive
• Stationary
• Negative
• No Correlation

2) What is the name of the measure of correlation that is used for linear relationships.

(a)  

3) What is the y in the Linear Regression equation?

(a)  

4) What is the β0 in the Linear Regression equation?

(a)  

5) What is not part of building a Regression model?

• Model Estimation
• Data Preparation
• Model Calculation
• Model Formulation

6) Which of these are types of Feature Selection Techniques?

• Using Correlation Coefficients
• Pairplot
• Heatmaps
• Threshold Selection

7) Which of these is a method of Assessing Model Fit?

• Root Mean Squared Error (RMSE)
• Residual Analysis
• Mean Absolute Error (MAE)
• R-squared (R2)

8) Which of these is a method of Error Metrics?

• MAE
• R2
• MSE
• Hypothesis Testing

9) What is the definition of MSE?

• Measures the average absolute difference between predicted and observed values.
• The square root of MSE.
• Measures the proportion of the variance in the dependent variable that is explained by the independent variables.
• Calculates the average squared difference between predicted and observed values.

10) Which is not a Method of extracting Insights?

• Coefficient Interpretation
• Predictive Power
• Forecasting
• Scenario Analysis