Consider the following time series representing Natural Gas Sales for Northern Natural Gas Company for the years 2007-2010.
See printscreen with question 1 data
Use this information to answer (a) through (f). Type your answers in the box below.
(a) Interpret the value of S3, the seasonal index in the third quarter. That is, how much higher or lower are natural gas sales in the third quarter compared to the base (trend) line?
(b) Calculate d9, the deseasonalized value for the 1st quarter of 2009 (t = 9).
(c) State which of the columns in the above table (choose from either Year, Quarter, t, Yt, St, dt, or Tt) would be used as the X and the Y variables in a regression analysis that would determine the trend component? Be sure to state which column is the X (independent) and which is the Y (dependent).
(d) Assuming the trend line can be described as Tt = 152.79 – 1.12*t, forecast the value of the trend component for the first quarter of 2011 (t = 17).
(e) What is the seasonal component for the first quarter of 2011 (t = 17)?
(f) Calculate the seasonally adjusted forecast for the first quarter of 2011 (t = 17).
Consider the following time series representing the weekly number of computers sold for the last 16 weeks, also shown in the Excel file bus305exam3data-S11.xlsx under Data Set A. Also shown are the Simple Exponential Smoothing (SES) forecasts using a smoothing constant (alpha) of 0.3.
Use this information to answer (a) and (b). Type your responses in the box below.
(a) What is the value of F1, the SES forecast for t = 1?
(b) What is the forecasted value for week 17 (again, using Simple Exponential Smoothing with alpha = 0.3)?
Why Work with Us
Top Quality and Well-Researched Papers
We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.
Professional and Experienced Academic Writers
We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.
Free Unlimited Revisions
If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.
Prompt Delivery and 100% Money-Back-Guarantee
All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.
Original & Confidential
We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.
24/7 Customer Support
Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.
No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.
Admission Essays & Business Writing Help
An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.
Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.
If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.