Hello,
I have a set of 21 time-series with weekly data of the same variable from years 2000 to 2020 (January to mid-May only). The figure illustrates those 21 time-series.
I want to evaluate if one of these time-series (year 2020, black line) is statistically different than the set of other 20 time-series (years 2000 to 2019, colored lines) or if its variation is random noise within the dataset.
What would be the proper statistical test for this comparison?
Thanks.