Questions

1. Define regression and how you can implement in R.

2. How do you find the coefficient of determination for linear regression / multiple regression in R?

3. How do you find the confidence interval for a prediction fitted with linear regression / multiple regression in R?

4. How will you detect multicollinearity in R in multiple regression?

5. What is the significance of ANOVA and how will you use it to compare the results of two linear regression models?

6. How do you perform feature selection in R for multiple linear regression?

7. How do you rank significance attributes in a multiple linear regression model in R?

8. How do you install the waveslim package and load it into the R workspace?

9. How do you plot a time series and extract the head and tail of the time series?

10. How would you know the class of a variable created by the fft function?

11. How do you use the dwt function using any given filter and take inverse dwt?

12. How do you extract the real and imaginary parts of a series?

13. How would you use fast Fourier transformation...