1) Funnel shape in the residual plots indicates a constant error variance. A) TRUE B) FALSE j) In simple exponential smoothing, the smoother is a linear combination of the current observation and the smoothed (discounted) sum of all previous observation. A) TRUE B) FALSE k) In simple exponential smoothing, the accuracy of smoother does not depend on the value of discount factor (lambda) and the initial value yo. A) TRUE B) FALSE 1) Stationarity of the time series data should be confirmed before forecasting modeling. A)TRUE B) FALSE m) While using Durbin-Watson test for testing positive autocorrelation of the residuals, the alternative hypothesis is H1: >0. A) TRUE B) FALSE