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How to detect seasonality from plotted data without using tools or libraries

Discussion in 'Education' started by Devi, Oct 8, 2018.

  1. Devi

    Devi Guest

    I want to know how to understand whether my dataset which I have plotted using excel contains seasonality or not in it. My plot is shown below:

    1)How to detect seasonality on viewing the chart

    2)How to detect seasonality from dataset (for coding purpose)

    3)If seasonality identified, how to remove the seasonality and make the dataset stationary. [​IMG]

    Edit: new plot after transformation [​IMG]

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