Write a brief description of the time series plots of the four indices. Do the series look stationary? Do the fluctuations in the series seem to be of constant size? If not, describe how the...

Write a brief description of the time series plots of the four indices. Do the series look stationary? Do the fluctuations in the series seem to be of constant size? If not, describe how the volatility fluctuates.

 Next, run the following R code to compute and plot the log returns on the indices.

 logR = diff(log(EuStockMarkets)) plot(logR)