How to check the stationarity with unit root test?

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Hello everyone, I have the data in the picture. How to check the stationarity with unit root test? Please help me!

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You probably want adf.test() in the tseries package.

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Thank you. I know using adf.test to check the stationary with unit root test but my data is kind of complicated, so I don't know how to check.

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If you think the data should be thought of as one long series, then you need to arrange it that way. You way want to see pivot_longer() in the package tidyverse.

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@startz Thank you so much :smiling_face_with_three_hearts:

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