A classic example of a non-stationary series is the daily closing IBM stock price series (data set ibmclose ). Use R to plot the daily closing prices for IBM stock and the ACF and PACF. Explain how...

A classic example of a non-stationary series is the daily closing IBM stock price series (data set ibmclose ). Use R to plot the daily closing prices for IBM stock and the ACF and PACF. Explain how each plot shows that the series is non-stationary and should be dierenced.