Solve all questions excluding question number (III)

Mark: 2x2 + 4 +2 +3 + 2 Question 1 a. Sales of a product for the last three years are given as follows: Mar-Apr 490 Year Jan-Feb 1 500 2 508 3 505 485 492 May-Jun 495 505 500 Jul-Aug 540 545 535 Sep-Oct 520 515 518 Nov-Dec 510 505 502 i. ii. Find the seasonal index for each of the mentioned slots considering last three years demands. Find the least square regression line y= a + bx; where b - {x,y,-n.c.. a =j-b.x; ' - nx? Draw the regression line found in ii) Using the regression line found in ii) determine 4" year demand and show it in the graph. Forecast the rounded-off demand for each of the mentioned slots of year 4. 111. iv. V