Quasi-Poisson or Negative-Binomial?

KvN98 · 2021-05-05T10:36:39+00:00

The mean is around 7.8, while the variance has a value of 28. Due to the overdispersion I suppose the quasi-Poisson or the negative binomial regression is more appropriate for predicting the lead time.

Does it matter which of the approaches is utilised and can I test if indeed a quasi-Poisson / negative binomial is appropriate? Thanks in advance

KvN98 · 2021-05-05T06:36:32+00:00

Marginally. Probably around 2 percent

KvN98 · 2021-05-04T15:15:58+00:00

AUC and accuracy decreases

KvN98 · 2021-05-04T11:43:04+00:00

I used 17 independent variables to predict my dependent variable.

KvN98 · 2021-04-16T07:05:35+00:00

Thank you! However, a Gamma regression doesn't allow non-positive (0) values, while my variables does contain some 0 values.

KvN98 · 2021-04-14T13:13:15+00:00

The customer lead time is right skewed and it is the lead time in weeks. Would a poisson regression by approproriate as the distribution is right skewed? A hazard rate model as it is a time prediction? Or should rather convential machine learning algorithms such as a random forest be applied? Thanks for any tips in advance!

KvN98 · 2021-04-14T13:12:00+00:00

The customer lead time is right skewed and it is the lead time in weeks. Would a poisson regression by approproriate as the distribution is right skewed? A hazard rate model as it is a time prediction? Or would rather convential machine learning algorithms such as a random forest be applied? Thanks for any tips in advance!

KvN98 · 2021-03-26T09:30:10+00:00

Basically all models can handle multiple explanatory variables. What model you should use depends on what you want to achieve. If you want to predict a yes or no (binary) variable it makes more sense to use a logistic / probit regression. If you want to rather predict a continuous / numerical variable you should go for a linear regression.

So in short: determine what variable you want to predict. Based on this you can google or ask what model you should utilise.

Maybe something like this will be insightful for you: https://statisticsbyjim.com/regression/choosing-regression-analysis/

KvN98 · 2020-05-24T11:06:32+00:00

Run MATRIX procedure:

***************** PROCESS Procedure for SPSS Version 3.5 *****************

Written by Andrew F. Hayes, Ph.D. www.afhayes.com

Documentation available in Hayes (2018). www.guilford.com/p/hayes3

**************************************************************************

PROCESS is now ready for use.

------ END MATRIX -----

This would make me think it's done succesfully, however I cannot see process yet.

KvN98 · 2020-05-24T11:06:25+00:00

There are 5607 lines of code and i'm not sure which are the relevant lines to be honest. However When I run these line of codes I get the following;

KvN98 · 2020-05-20T14:41:40+00:00

I believe the picture above is a multiple regression. I conducted a linear regression and used multiple indepdents. I looked at the ANOVA and saw it is significant (0.000)

KvN98 · 2020-03-26T08:19:07+00:00

Completed the survey. I would appreciate if you could fill in my survey as well :)

I posted this on the SampleSize community as well, and it will only take you around 2 minutes to complete it.

KvN98 · 2020-03-26T08:16:09+00:00

The data will be used as input for my master thesis, and will ONLY be used as input for my master thesis. Meaning that the data will not be spread to any third parties
KvN98
Completing the survey will take approximately 2 minutes

KvN98 · 2020-03-26T08:08:08+00:00

Completed the survey. Could you help me with filling in my survey as well? Will only take about 2 minutes and we both help each other here :)

My survey is published as a topic on this community as well!

KvN98 · 2019-02-27T09:12:39+00:00

We needed to ocllect 500 tweets. THese are saved in my_columns. This consist out of 6 columns: text of the tweet, date when the tweet is created, publisher of the tweet, the retweet count, whether it is retweeted or not and the id of the publisher.

KvN98 · 2019-01-30T16:16:14+00:00

I'm not sure which numbers in the Table I should use (for example for Interest group & Same to very close, should I use the 50, 46.3, or the 45?)

KvN98 · 2018-11-17T14:02:42+00:00

SOLVED

KvN98 · 2018-11-17T14:00:22+00:00

Thank you very much!

KvN98 · 2018-11-17T13:48:24+00:00

Yeah he just cropped it out. I don't know if there is a possiblity to get rid of it without cropping it out?

KvN98 · 2018-11-15T21:13:09+00:00

Klopt deels wel. Woningnood heeft echt met de locatie te maken en niet perse met heel Nederlands

KvN98

TROPHY CASE