Please assist with the tables below:

The following data report total, monthly U.S. gasoline sales in millions of dollars from January 2017 to December 2018. (To find the data, go to the site https://www.census.gov/retail/index.html#mrts, find "Monthly Retail Trade Report," then select "Time Series/Trend Charts.")

DATA

Year Month Sales ($ Millions)

2017 Jan $34,430

2017 Feb 32,772

2017 Mar 37,422

2017 Apr 37,773

2017 May 39,539

2017 Jun 38,809

2017 Jul 38,597

2017 Aug 40,017

2017 Sep 40,146

2017 Oct 40,517

2017 Nov 38,986

2017 Dec 38,846

2018 Jan 38,023

2018 Feb 36,177

2018 Mar 41,448

2018 Apr 41,909

2018 May 46,849

2018 Jun 46,346

2018 Jul 46,791

2018 Aug 47,633

2018 Sep 44,385

2018 Oct 47,142

2018 Nov 42,039

2018 Dec 38,426

d.Evaluate a seasonally adjusted trend forecasting model. What is the MAD?(Round your answers to 3 decimal places.)