***Non-stationary is not correct

The graph below depicts the weekly exchange rate between the British Pound and the U.S. Dollar. Simply looking at the plot, your best assessment of this time series data would be that it is... 2.5 2 ma 1.5 1 0.5 0 1 186 223 260 297 334 371 556 593 630 667 704 Fig. 2.2: Weekly BP/USD exchange rate series (1980-1993) stationary is both non-stationary and shows seasonality shows seasonality has a trend non-stationary