Different samples

Hello everyone

I have the following doubt

How can I prove that the data of different samples (sample 1 and sample 2) have similar behaviors?

Graphically I can see that they have similar behavior, but how can I prove with a statistical test?

I appreciate your answers

Thanks so much for reading


Less is more. Stay pure. Stay poor.
Actually we cannot attempt to answer your query until you tell use about the datasets. How are data formatted and what are the sample sizes? Also, please post your graph comparing the samples, which would be a great help for us.