Simulated IMA(2,2) series / time series
A simulated IMA(2,2) series with theta1=1 and theta2=-0.6
data(ima22.s)
The format is: Time-Series [1:62] from 1 to 62: 0.00000 0.00000 -0.00569 2.12404 2.15337 ...
data(ima22.s) ## maybe str(ima22.s) ; plot(ima22.s) ...
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