Omer Zeybek

5 Questions 1 Answers 0 Followers

Questions related from Omer Zeybek

How should I estimate a regression on Elasticity of Sales in response to stokouts ?

I have daily sales data and stock availability for items in a supermarket chain. My goal is to estimate the sales quantity elasticity with respect to availability (represented as a percentage)....

06 March 2024 8,390 1 View

How can I estimate SUR system with unbalanced equations using systemfit (R)?

I have several ARDL models; they are well specified. But, there are correlations among residuals of equations. So I need to estimate a SUR system. But, I cannot solve the SUR system using...

15 September 2021 6,872 0 View

Do you know any Reliable and pratical guide for DFA estimation?

Hi I have 38 different Google Search Trends series over last 5 years. I need to check if common trend factors of these series could predict my dependent variable efficiently.. However unless I...

09 October 2018 562 1 View

Do I still need to use sampling weights while working with exclusively micro population ?

I am working on a panel data modeling research aiming to find labor force dynamics which are affecting employment of young newly graduated women engineers in Turkey. We employed the latest Labor...

03 September 2018 1,879 2 View

Interpretting Ng Perron Unit Root Test Results.?

I i have applied NG Perron's modified tests to my timer series data. But when I tried to interpret test statistics I saw that, the decision given by MZa and MAzt contradicts with MSB and MPT. Is...

12 March 2017 6,349 2 View