What's the difference between a random walk, AR(1) or a white noise process?

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Mash Wednesday
Mash Wednesday 2021-10-22
Hi,
I have a file with four columns with time-series data. The first three columns are either a random walk, AR(1) or a white noise process. I'm new to this so I'm not exactly sure how to determine that using Matlab. Any help is appreciated.
Thank you.

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