Question: In an R session you can load a dataset, called name, using data(name). Load the time series objects Nile, UKgas, co2, nhtemp, JohnsonJohnson and nhtemp.

  1. In an R session you can load a dataset, called name, using data(name). Load the time series objects Nile, UKgas, co2, nhtemp, JohnsonJohnson and nhtemp. For each comment briefly on the following aspects [justifying your comments if possible] what is the period of the time series? is there a seasonal effect and, if so, is it linear or multiplicative? what can you say about the level and trend? Do you think that there are any change points? are the time series stationary?

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