0
$\begingroup$

customers everyday

Here, this plot shows the number of customers served per day from 1 jan 2018 to 31 dec 2019.

I grouped the entire data by each month and calculated the average and variance per month.

This is the average average

This is the variance enter image description here

I also ran an augmented dickey-fuller test and got the following result

ADF Statistic: -26.031963

p-value: 0.000000

Since, the mean and variance do not vary too much, should I infer that the data is stationary?

$\endgroup$
0
$\begingroup$

There are certainly more tests you could try out but by definition of the test, you can conclude that your data is stationary.

On the other hand I would be concerned with your test results. Getting a p of exactly zero, and a test statistic value of way below -3 or -4 I would look at your implementation again and check if it's right.

| improve this answer | |
$\endgroup$
  • $\begingroup$ The p value looks like a problem to me to, I should check it again. Thanks for the answer. $\endgroup$ – raptorAcrylyc Jul 1 at 14:47

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.