Question: -Retrieve the cardiovascular mortality and the temperature data from the set cmort . Plot the data and check for stationarity and cross stationarity. -Transform both

-Retrieve the cardiovascular mortality and the temperature data from the set cmort. Plot the data and check for stationarity and cross stationarity.

-Transform both data into stationary series, check stationarity both by plotting lag auto-correlations and the roots of the characteristic equations.

-Plot the time series obtained in the previous part, evaluate auto-covariances and auto-correlations and provide their plots.

-Estimate the cross-correlations between the two series obtained in the second part and provide the plot of auto-correlation lead and lag.

-State your conclusion on the length of persistence of lead or lag cross-correlations estimated in the previous part.

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