a. Compute for: i. Na'r've Method ii. Three-period Moving Average iii. Three-period Weighted Moving Average iv. Four-period Moving Average v. Four-period Weighted Moving Average b. Plot the original time series and comment on the appropriateness of a linear trend. 2- Suppose that the University of the West had the following data of its growth of enrollment from 2016-2014. Year Enrollment 2006 3000 2007 3200 2008 3600 2009 3650 2010 4000 2011 4200 2012 4300