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.")

The following data report total, monthly U.S. gasoline sales in millions of dollars from January 2017 to December 2018. (To find the Charts."] data, go to the site https:/www.census.gowretail/index.html#mrts, find "Monthly Retail Trade Report," then select "Time Series/Trend Year Month Bales (5 millions) 2017 Jan $35, 130 2017 Feb 33. 472 2017 Har 38, 123 2017 38,473 2017 Hay 40,239 2017 Jun 39,509 2017 Jul 39.297 2017 Aug 40, 717 2017 Bep 40,846 2017 41, 217 2017 39,686 2017 39,546 2018 Jan 38, 723 2018 Fah 36,877 2018 Har 42, 148 2018 Apr 42, 609 2018 Hay 47,549 2018 Jun 47,046 2010 Jul 47,491 2018 Aug 48, 393 2018 45,085 2018 Oct 47,043 2018 Nov 42,739 2010 39, 126 Click here for the Excel Data File d. Evaluate a seasonally adjusted trend forecasting model. What is the MAD? (Round your answers to 3 decimal places.) Sales Absolute Click here for the Excel Data File d. Evaluate a seasonally adjusted trend forecasting model. What is the MAD? (Round your answers to 3 decimal places.) Porlod Month-Year Month Sales Absolute ($ Million) Trend Index Forecast Error Jan-2017 1 35,130 2 Fob-2017 2 33,472 3 Mar-2017 38, 122 Apr-2017 4 38,473 5 May-2017 5 40,239 Jun-2017 6 39.509 7 Jul-2017 7 39.297 B Aug-2017 40.717 9 Sep-2017 40.846 10 Oct-2017 10 41.217 11 Nov-2017 11 30.686 12 Doc-2017 12 39.546 13 Jan-2018 1 38.723 14 Fob-2018 2 36,877 15 Mar-2018 42.148 16 Apr-2018 4 42.600 17 May-2018 5 47.549 18 Jun-2018 6 47,046 19 Jul-2018 7 47,491 20 Aug-2018 48,339 21 Sep-2018 9 45,085 22 Oct-2018 10 47,84222 Oct-2018 10 47.842 23 Nov.2018 11 42.739 24 Dec-2018 12 39,126 MADE e. What are the monthly indexes? (Round your answers to 3 decimal places.) Month Index 1 2 10 1210 12 f. Forecast sales for January, February, March, and April of 2019. (Round your answers to 2 decimal places.) Answer Is not complete. Forecasted Slaos Period 25 Sales 40,075.59 () million Period 26 Solos million Period 27 Sales million Period 28 Sales million