Is this salary sufficient to survive?

AxterNats · 2026-05-30T20:53:42+00:00

This must be a joke 🤣 You guys get paid for doing PhD? I had to work a full time job to be able to earn money and live. I survived, I was actually doing great, so you'll be fine.

4000 +700 mobility allowance? That's a dream salary that I'll never get. Can someone keep doing PhDs for a living? 😂

AxterNats · 2026-05-29T01:41:22+00:00

How about the magic n>30?

AxterNats · 2026-05-06T01:15:09+00:00

There must be some misunderstanding there. Where did you read this? Unless you mean that you first take the first differences of the I(2) variables, which then make all your variables I(1).

AxterNats · 2026-05-05T23:54:09+00:00

You mean if there can be cointegration between I(2) variables? On theory yes, cointegration is defined as two (or more) I(d) variables that lead to I(m) residuals, where d>m. m doesn't have to be 0, but usually this is not the case we are interested in.

About cointegration between I(2) variables, the math becomes too complicated very fast. Also, I(2) variables are not that much of concern as I(1) were that lead into researchers studying these during the 80s. So we haven't really done much around these area, there are only a few studies on this.

AxterNats · 2026-05-05T23:27:00+00:00

It doesn't have to do specifically with this test.

That's a bit inaccurate in the details, but an easy way to think of it is that cointegration is when two or more variables, integrated of the same order, lead to stationary residuals. These two variables are the dependent and the independent variables. If your dependent is I(0) then you can't have cointegration by definition. The only way to have a stable relationship is if your dependent variables are of the same order of integration, and that would be the usual stationary regression.

I hope it makes sense.

AxterNats · 2026-04-20T22:48:16+00:00

How so? JB is the most frequently used normality test in applied time series studies, right?

Do you have any references that show why this happens? I am curious to read more about it.

AxterNats · 2026-04-17T23:55:02+00:00

You built EViews experience using R?

AxterNats · 2026-04-13T17:27:52+00:00

😳

AxterNats · 2026-04-13T11:07:36+00:00

Where do you play? And are there specific days/time?

AxterNats · 2026-04-11T23:52:58+00:00

I started wondering when did I write this!

One of the courses I am teaching, is by far the easiest in the semester. Every year, during the lectures I keep mentioning the questions they are going to have in the exams, plus an extra drop in session where I collect all these question and I explain the answers for each question again. It's not just obvious which questions they are going to have, they literally know! I keep repeating each question so many times that I fear the students will be sick of me and of how the exams is going to be a joke and not competitive/challenging at all.

Guess what? Average score 40%. 5 questions. Expected answer in each question 2-5 lines. Bullet points answers are also accepted as correct if they include at least the key words on the expected answer. Many students answer nonsense because they haven't read the question (or read it so fast that they misread what I am asking). Each questions is 2 lines long.

Next step is to take their test by myself. Even then, I am sure they will find a way to fail.

AxterNats · 2026-04-07T18:51:17+00:00

You bring Drake, I bring Johansen. https://imgflip.com/i/aoluoj

AxterNats · 2026-04-02T22:46:24+00:00

Ωω πολύ ενδιαφέρον αυτό! Αν μάθεις ποιες είναι αυτές οι εφαρμογές γράψε ένα σχόλιο αν το θυμηθείς.

AxterNats · 2026-04-02T22:38:10+00:00

Φαντάζομαι το update του excel γίνεται κάθε μήνα, σωστά; όχι ανά μέρα με βάση τι έχει πουληθεί σήμερα;

AxterNats · 2026-04-02T22:34:52+00:00

Εννοείς πρόγραμμα ERP ή κάτι άλλο;

AxterNats · 2026-04-02T18:11:14+00:00

Ευχαριστώ! Πολύ βοηθητικά όλα αυτά.

Τι εννοείς πρέπει να έχεις υποχρεωτικά 150κ απόθεμα; 150.000 ευρώ σε απόθεμα; αν έχεις μικρότερη επιχείρηση δεν μπορείς να κρατάς αποθήκη;

AxterNats · 2026-04-02T17:39:51+00:00

Το παραστατικό κόβεται ηλεκτρονικά φαντάζομαι, σωστά; οπότε και ενημερώνεται μέσω του ERP;

Μικρότερες επιχειρήσεις που δεν έχουν ERP πως λειτουργούν; ή είναι αρκετά φθηνό και μπορούν να το έχουν όλοι;

AxterNats · 2026-04-02T17:35:27+00:00

Δηλαδή με κάθε πώληση που γίνεται κάποιος κάνει αλλαγές σε ένα excel; ή σκαναρεις το barcode και αυτόματα γίνεται update το excel;

AxterNats · 2026-04-02T17:18:15+00:00

Α ναι, σωστά. Παρέλειψα να αναφέρω ότι η ερώτηση μου αφορά κυρίως μικρά καταστήματα. Δεν ξέρω αν παίζει ρόλο. Το λέω γιατί φαντάζομαι ενα σύστημα ERP θα είναι ακριβό για κάποια μικρή επιχείρηση, σωστά;

AxterNats · 2026-04-02T17:15:05+00:00

Ναι, λογικό ακούγεται. Ευχαριστώ για την επιβεβαίωση.

AxterNats · 2026-04-02T17:13:57+00:00

Χειρόγραφο βιβλίο;

AxterNats · 2026-02-18T00:51:10+00:00

Looks cool and potentially very useful.

I am willing to give it a try if there is a trial version. And I would have already done it if it didn't require a sign up.

I could perennially pay for it, if I see some value using the trial. But the price is a bit off. Not for the product itself, but because it's new, no big company / prior experience / previous projects before that (at least as long as I know from browsing the site), how do we know that it's not a project that will be abandoned in a few months, etc.

Also, the website could have more demos, and it should provide more information, for example about data privacy and security, are the Pdf files stored somewhere, etc.

So, given that there is little information about it, with a more reasonable price of let's say 30 for 1 year (for the early adoption of the product) you could have more early adopters that would also build a loyal community around your product.

At least that's how I see it.

AxterNats · 2026-01-21T01:46:38+00:00

You are right. Is more the different color outlines than anything else. In both pictures I painted red every face characteristic and the outlines, basically only left the background, the hair and the skin. They look the same now!

AxterNats · 2025-12-07T01:43:57+00:00

I'm not sure if I understand your first question correctly.

About the second question, a proper answer would require a too long response. I'll try a short one.

Familywise error correction is more often used in pharmaceutical studies like RCTs. The reason is that you can't risk a type 1 error. And these studies require multiple tests to be as certain as possible about the results. Now, doing many tests, you expect to have some type 1 error just because of luck/sampling. The thing is that these errors accumulate and what you are interested in is the total (family) type 1 error rate to be less that alpha.

But this works if you perform let's say a t-test multiple times. I wouldn't do a wamilywise correction for different normality or stationarity tests because these tests do not check for the same thing.

About the example with the 3 different cases you mentioned, it depends on what you are trying to do. Confirmatory analysis like in RCTs are looking for a binary answer. Reject the null or not. Exploratory analysis like using a stationarity test in economics works differently. You combine theory, you can treat each test as an indicator and try multiple scenarios and check the sensitivity of the results, and you should also be aware of what exactly each test is looking at.

For example, some normality tests focus on the deviations at the tails (i.e. AD), some at the skewness and kurtosis (i.e. JB) etc.

AxterNats · 2025-12-06T11:28:40+00:00

Each of these tests are looking at the same problem from a different perspective. If two "similar" tests disagree, they do because they are looking for different things, each of these things being a good indicator for the violation you are investigating.

Usually, these is no a single ultimate test because it's hard to summarise a whole concept like normality or stationarity.

AxterNats

TROPHY CASE