A fifth-order autoregressive model is fitted to a time series with monthly data for 5 years (i.e. sample size n=60). What are the degrees of freedom of the model?

Assume the smoothing coefficient W=0.4. What are the exponentially smoothed values for milk production in January and February of 2023? 

Which of the following statement about moving averages and exponential smoothing is correct?

VIF can be used as a measurement for collinearity. Which of the following is NOT a typical indication of strong collinearity?

Which of the following shows the correct data tabulation?  

What is the value in the cell at the intersection “Regression” and “df”? 

The adjusted r^2 for the quadratic model is 0.84 and the adjusted r^2 for the simple regression model is 0.87. What model is better?

If a quadratic regression model is Yi= β0 + β1X1i+β2X1i2+ ɛi, what should be the alternate hypothesis (H1) for testing the quadratic effect?

What would the equation for the 1st order autoregressive model look like?

Create a method called calcVal that has two numeric parameters and returns a number.  Return the difference of those two values (first one minus the second).  The parameter and return data types should match the data type for the promptUserData method created in the last question. Just like the last question, don’t include the main method or public class, just the method described.  If needed, assume Scanner package has been imported.  Also include the javadoc.