Use the Decomposition module in the Time Series menu to obtain Seasonal Indices for the data. Specify the worst and best months for funding, explaining the meaning of the corresponding indexes. Using the multiplicative decomposition model obtain trend-seasonal (TS) forecasts for 1998. Task 4 Take a first difference of the time series data and construct an autocorrelation plot of the differenced data with 60 lags. Do you think the data is stationary? Explain you answer. Task 5 Now take a difference of Lag 12 and draw the autocorrelation and partial autocorrelation plots