Then you know whether a random walk is stationary? Do you think the stock market is or isn’t a random walk?
You mean after you have corrected for any trend? You have to have done that: by definition of stationary.
Then you know whether a random walk is stationary? Do you think the stock market is or isn’t a random walk?
You mean after you have corrected for any trend? You have to have done that: by definition of stationary.