PLEASE DO IT ON EXCEL

Portfolio Question One - Cost estimation antcity is a large nursery and retail store specializing in house and garden lants and supplies. Jean Raouth, the assistant manager, is in the process of udgeting monthly supplies expense for 2019. She assumes that in some way upplies expense is related to sales, either in units or in dollars. She has ollected these data for sales and supplies expenses for June 2016 through december 2018, and has estimated sales for 2019. Data Supplies Date Expense Sales (Units) Sales (Dollars) June-16 $ 2,745 354 $ 20,090 July-16 3,200 436 $ 21,900 August-16 3,232 525 28,780 September-16 2,199 145 18,560 October-1 6 2,321 199 21,680 November-16 3,432 543 21,520 December-1 6 4,278 1,189 24,630 January-17 2,310 212 February-17 2,573 284 March-17 69 69 19,990 21,900 2,487 246 $ 18,940 April-17 2,484 278 21,340 May-17 3,384 498 32,100 June-17 2,945 424 $ 28,500 July-17 2,758 312 22,650 August-17 3,394 485 24,350 September-17 2,254 188 18,930 October-17 2,763 276 $ 22,320 November-17 3,245 489 30,040 December-17 4,576 1,045 69 69 33,090 January-18 2,103 104 21,950 February-18 2,056 167 $ 20,450 March-18 3,874 298 $ 23,010 April-18 2,784 398 23,450 May-18 2,345 187 $ 18,150 June-18 2,912 334 20,940 July-18 2,093 264 $ 19,340 August-18 2,873 333 $ 20,540 September-18 2,563 143 October-18 169 19,770 2,384 245 $ 18,570 November-1 8 2,476 232 21,890 December-1 8 3,364 1,122 34,330 January-19 180 16,000 February-19 230 $ 20,000 March-19 190 19,000 April-19 450 $ 24,000 May-19 350 $ 23,000 June-19 350 $ 23,000 July-19 450 $ 25,000 August-19 550 30,000 September-19 300 $ 25,000 October-19 300 $ 25,000 November-19 450 $ 32,000 December-19 950 $ 39,000 Required Develop the regression that Jean should use based on the data and evaluate the reliability and precision of the regression you have chosen. What are the predicted monthly figures for supplies expense for 2019