Part 1Suppose you have been given a time series and are asked to forecast the values of the time series during one or more of the future periods. Explain a few of the actions that you will undertake as your preliminary investigation of the given time series before you decide which particular forecasting method you should use.Part 2In many applications, a time series decomposition (i.e., time series filtering) is used to separate or decompose a time series into its trend, seasonal, and irregular components. In some of these applications, the decomposition relationship is assumed to be additive, while in other applications the decomposition relationship is assumed to be multiplicative. Describe the situations when you would prefer to use an additive decomposition method, and situations when you would use a multiplicative method in your time series decomposition. Furthermore, discuss a specific example of a real-life time series of interest to some enterprise, and for which you would prescribe a multiplicative decomposition.Note: an additive decomposition of time series Xt is a decomposition of type:Xt=trendt+seasonalt+irregulartXt=trendt+seasonalt+irregulart ,and a multiplicative decomposition is of type:Xt=trendt×seasonalt×irregulartXt=trendt×seasonalt×irregulart

Taking into consideration the “Writing Style” chapter you just read, reflect on the reading and your own experience with professional writing. Please submit your response to the following:What is the most useful thing you learned in the “Writing Style” chapter and how will you use it in your own writing?What does the word “concision” mean to you and why is it so important in professional writing? Do you have a strategy (or are you developing one) for ensuring that your own writing is concise?Consider your own writing style in professional correspondence (i.e., emails for school or work, or other professional writing tasks you do on the job). How would you characterize your style. Considering what you have learned, do you think it is appropriate. How could your style be improved?undefinedI have attached pages from “Writing Style” chapter to anwser the first question