Incorrect Question 41 0 / 3 pts This Problem Counts 3 Points Use the following data, what is the Tracking Signal for periods 1 thru 4 and what does this tell you? Week Demand Forecast 900 800 2 1,321 925 3 1.212 1266.38 1,658 1282.26 TS = 1.09 and is small enough that it is adequately tracking changes O TS = -43 and is small enough that it is adequately tracking changes O TS = .43 and is positive so model is positively correlated with demand. O TS = -1.09 and is negative so model is positively correlated with demand O TS = 3.53 so model is tracking in an acceptable range but nearing the point where it should be investigated for bias