I have 2 years of data for multiple variables (month data). My goal is to identify which ones have seasonality and which ones don't. How can you test for seasonality without plotting?
i used seasonal decompose
month
2016-01-01 204.0
2016-02-01 129.0
2016-03-01 163.0
2016-04-01 297.0
2016-05-01 319.0
2016-06-01 359.0
2016-07-01 271.0
2016-08-01 137.0
2016-09-01 220.0
2016-10-01 88.0
2016-11-01 178.0
2016-12-01 209.0
2017-01-01 230.0
2017-02-01 153.0
2017-03-01 186.0
2017-04-01 197.0
2017-05-01 209.0
2017-06-01 221.0
2017-07-01 253.0
2017-08-01 243.0
2017-09-01 171.0
2017-10-01 98.0
2017-11-01 1067.0
2017-12-01 410.0
result = seasonal_decompose(df, model = 'additive' , period = 12) print(result.seasonal)
