A residential home construction company is a business that specializes in building new houses or renovating existing residential properties. These companies typically provide a range of services related to home construction, from the initial design and planning stages to the actual construction and final finishing touches. Residential construction companies may specialize in housing types, such as single-family homes, townhouses, condominiums, or custom-built homes. They work closely with architects, engineers, subcontractors, and suppliers to manage every aspect of the construction process and ensure that the homeowner's vision is realized. Please refer to the Excel that shows the number of new constructions for residential homes per month, in thousands, from 2013 to 2018 in Oregon.

a) Prepare a graph of the data.

b) Compute forecasts for the twelve months of 2019 using linear regression.

c) Prepare a graph of the forecast data.

d) Compute the MAD of your model.

e) Compute and chart the tracking signal.