Show your work. Your response to this homework assignment needs to include both

Show your work. Your response to this homework assignment needs to include both narrative answers (in a text document) and spreadsheet results (in an Excel file) combined in a unified submission.
Write your exercise response using Standard American English. Include a title for your response. The subtitle contains your name, the course title, and the date of submission. Type your response document in the Times New Roman font, size 12, and double-space the lines.
The purpose of this exercise is to test your ability to:
Forecast demand using time-series methodologies given historical demand data in a supply chain.
Analyze demand forecasts to estimate forecast error.
Use Excel to build time-series forecasting models.