Let's say I have an user that uses the application one time every monday exactly... That means once a week. If I do the dfft I can see a peak in this frequency
How can I analyse the general case for many users and with apparently random frequencies of use?
Is the fft the best choice?
I can use mat lab or excel to try something
This is the fft of an user of the app by day
I am assuming by it that I can say he uses the app mostly each 2.3 days (1/0.4219)... It is a coeherent conclusion? How can I get the information of all the other peaks?