Categorical Predictor/Dummy Variables in Regression Model in SPSS

Рет қаралды 35,760

3 жыл бұрын

This session guides on how to use Categorical Predictor/Dummy Variables in SPSS through Dummy Coding.
#ResearchCoach #SPSS #CategoricalPredictorVariables #DummyVariables #DummyCoding #DataAnalysis #Regression
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Пікірлер: 74

@wulixiaodesesun2884 Жыл бұрын

Thank you so much, Fawad. Each time when I was stuck in the analysis, I just searched your videos. All your videos were super easy to understand and straight to the point. Thank you!!

@researchwithfawad Жыл бұрын

Pleasure. I am glad you liked the videos and found them helpful. Do share in your research circle.

@tengkusitiaishabintitengku3095 2 жыл бұрын

As usual, I am learning a lot from you. Thank you for explaining things very well.

@researchwithfawad 2 жыл бұрын

Pleasure. I am glad you liked it

@Mina_Lee_01 2 жыл бұрын

You were great 😊 We were never taught categorical regression in school but while doing a research project I didn't know how to include their impact. Thank you so much ♾️🔥

@researchwithfawad 2 жыл бұрын

Thanks. I am glad you liked it.

@saalemsadeque3595 5 ай бұрын

Beautifully explained

@researchwithfawad 5 ай бұрын

Thanks for watching.

@dtroy4398 2 жыл бұрын

best dummy explanation ever !

@researchwithfawad 2 жыл бұрын

Thanks. I am glad you liked it.

@ibrahimabdullatifibrahim9942 Жыл бұрын

Thank you for informative work greetings

@researchwithfawad Жыл бұрын

Glad you liked it!

@shilpabandyopadhyay1187 2 жыл бұрын

Yet another super useful video explained so simply! Thanks! Sir, can you also please explain 3 x 2 way MANCOVA in one of your videos, if possible?

@researchwithfawad 2 жыл бұрын

Thanks. I am glad video was helpful.

@solite4168 2 жыл бұрын

Thanks for this very good video - you explain things so well and clearly! Can I ask if I have pre and post scores on a depression questionnaire as 2 seperate variables, should I put both of these in the DV part or a new variable which is called 'Change in depression score' in the DV box when doing regression analysis? Thanks 😊

@researchwithfawad 2 жыл бұрын

Thanks. I am glad you liked it. You can have only one DV. So if you somehow create a change score, you are losing on the time dimension of your variable. A good idea could be regression analysis for pre and post scores and see if the significance changes for pre and post situation.

@shaistanooreen5436 Жыл бұрын

Very well explained.

@researchwithfawad Жыл бұрын

Glad it was helpful!

@FransiskaTanuwijaya-cx5bv 2 ай бұрын

Dear Dr. Fawad, thanks for the video! I was wondering, can I use one way ANOVA to check whether gender and country (categorical predictor/dummy variables) have an influence on customer loyalty (dependent variable)? Thank you in advance for your response!

@researchwithfawad 2 ай бұрын

Thanks for watching. Yes you can do it, any differences would suggest that there is an impact.

@SarahF-gh1rb 4 ай бұрын

Thank you so much for this explanation, Fawad! I was wondering if you could also confirm that females have lower customer loyalty than males (so just turn the hypothesis around) from your results? Or would you have to recode the dummy variables in this case to get a negative sign?

@researchwithfawad 4 ай бұрын

Hi. Thanks for watching. You can simply change the proposed hypothesis. No need to recode.

@neetugoyal8868 2 жыл бұрын

Sir,, after watching this video ,i learned how to use dummy variables in SPSS,Thank you.I want to ask you that which version of SPSS You used in this video.

@researchwithfawad 2 жыл бұрын

Thanks for your interest. I guess i have SPSS 26.

@MKJaved Жыл бұрын

Much appreciated the way you guide! I have a question related to this tutorial. We suppose that you have 4 or 5 constructs, and you only check the impact of gender and country on endogenous (e.g., customer loyalty) in SPSS, as you did show here. For CFA model in AMOS, do we have to include gender and loyalty in CFA model or not? Please answer

@researchwithfawad Жыл бұрын

Pleasure. I am glad you liked it. No need to include controls when running CFA, include controls when assessing the structural model.

@MKJaved Жыл бұрын

@@researchwithfawad Many Thanks!

@user-cf2nr7go2r Жыл бұрын

Thank you Sir.

@researchwithfawad Жыл бұрын

You are most welcome

@mohamedyhamadou1156 10 ай бұрын

Thank you very much sir

@researchwithfawad 10 ай бұрын

Thanks. I am glad you liked it.

@user-yj5gh2oj4w Жыл бұрын

hi thanks for the vid i wanna ask why you used linear regression when the variables are both categorical? isnt supposed we use logistic?

@researchwithfawad Жыл бұрын

The dependent is continuous. Hence linear regression.

@evelynfurtado1240 2 ай бұрын

Do we have to analyse each categorical variable separately with the independent variable ? Or can we run the regression analysis for more than two categorical variables on the independent variable?

@researchwithfawad 2 ай бұрын

You can put in the categorical variables in one model.

@user-pk7xy5ee5x Жыл бұрын

Hi, thanks for the video I have a question. I have independent variable with 4 categories, i coded 3 dummy variables and a reference with 0 value only. I have use PROCESS to gain indirect effects for each category relative to the reference category, but i also want to get the indirect effect of the reference. can i do this test?

@researchwithfawad Жыл бұрын

There has to be a reference category, if you want to get indirect effect of the references category then in another mediation model, another category will be reference.

@joytrovert6771 2 жыл бұрын

thank you so much for your explanation! if we want to report the B value, how to calculate it with those dummy variables? is there an equation for it?

@researchwithfawad 2 жыл бұрын

Thanks. I am glad you liked it. Beta value ia already in the coefficients table. The first column, please

@joytrovert6771 2 жыл бұрын

@@researchwithfawad oh wait, I want to clarify. so if we want to report the B value of the categorical IVs in our writing, we have to put the B value for each dummy variables?? Or there's a way to know the B value for each IV as a whole?

@researchwithfawad 2 жыл бұрын

Beta for Dummy is interpreted differently as shown in the video, it is a mean to compare with reference category. You can report Beta for all categories except for reference to which the other categories are compared.

@joytrovert6771 2 жыл бұрын

@@researchwithfawad ah i see.. now i totally understand :)) i do have another question. So i want to make a final model using multiple regression. Before that, i want to analyze the contribution of each IV to DV using bivariate regression. Then the IVs that statistically significant will be put in the multiple regression model. So if i use dummy variables, then there's a category that is not significant to a reference while others are significant, how to decide whether to put or not put that IV in the multiple regression model?

@researchwithfawad 2 жыл бұрын

Why do you want to delete insignificant factors and only have significant factors. Why not have all of them and discuss the reasons for insignificant results.

@82smh Жыл бұрын

What is the difference between this method and a sample t-test? Both say if there is a statistical difference between two groups but when do I use which method? Thank you very much.

@researchwithfawad Жыл бұрын

T-Test does not provide the R-Square and does not cater for more than two categories.

@takanna 10 ай бұрын

dear sir, your videos are great! i liked them. i have a question. i am comparing this research question: Outcome: Binary (whether a patient died or not) Independent Variable has 3 categories, instead of 2: Whether they have grade 1, 2 or 3 (ordinal fashion) severity of mucositis. which test should i use??

@researchwithfawad 10 ай бұрын

Use Binary Logistic Regression. Please watch kzfaq.info/get/bejne/qtKjn6qmyNioj5c.html

@palvibansal8951 2 жыл бұрын

Sir in my SPSS version 21 there is no option of create dummy variables, so please tell me which version you are using??

@researchwithfawad 2 жыл бұрын

I am using 26, You will need to download Python Essentials for SPSS 21, then you will have that option

@soundsofnature218 11 ай бұрын

Nyce one

@researchwithfawad 11 ай бұрын

Thanks for watching

@chefberrypassionateresearcher 5 ай бұрын

Sir, please tell how to interpret and write these results in APA format

@researchwithfawad 5 ай бұрын

You may please watch kzfaq.info/get/bejne/o7J7ibOJ3Ne4aaM.html

@aquamarine2239 Жыл бұрын

Do we have to create dummy variables for binary logistic ?

@researchwithfawad Жыл бұрын

For IVs, if they are categorical with more than 2 categories.

@anugrewal9790 2 ай бұрын

Greetings sir In case of dummy variables are used as control variable if they come out to be significant what does it mean?

@researchwithfawad 2 ай бұрын

Please watch the video on which you commented.

@anugrewal9790 2 ай бұрын

Yes sir I saw my doubt was if control variables comes out to be significant we will report that will that have any effect on our model like its validity?

@bacillusanthracis69 2 ай бұрын

How to see how many times higher/lower (Odds ratio) the values are compared to each other like in logistic regression [Exp(B) instead of B]?

@researchwithfawad 2 ай бұрын

Please watch kzfaq.info/get/bejne/qtKjn6qmyNioj5c.html

@bacillusanthracis69 2 ай бұрын

@@researchwithfawad I meant can we see OR for linear regression as well or is it only incase of logistic?

@researchwithfawad 2 ай бұрын

Only for Logistic Regression

@seharmayo5442 11 ай бұрын

Thank you

@researchwithfawad 11 ай бұрын

You're welcome

@seharmayo5442 11 ай бұрын

@@researchwithfawad respected Sir I have a question

@seharmayo5442 11 ай бұрын

Can you help me in understanding this point

@seharmayo5442 11 ай бұрын

I want to ask you about dummy variables interpretation

@jatinbasumatary4644 5 ай бұрын

sir, should i do install Python to create dummy variable on SPSS?

@researchwithfawad 5 ай бұрын

Yes, please

@ayeitsfatinaliaa1827 2 жыл бұрын

If we are using PROCESS, do we still need to generate dummy variables?

@researchwithfawad 2 жыл бұрын

No. Process will do it for you, you willnjave to add the details by clicking multi categorical button. Do it only for variables with 3 or more categories

@ayeitsfatinaliaa1827 2 жыл бұрын

@@researchwithfawad Thank you for your prompt reply!!

@hameemislam753 Жыл бұрын

That means for gender we don't need to create dummy variables coz it has 2 categories only what if gender is used as moderator in a study then should we also need not to create dummy variables for gender what will we put then in refrence like u said if age has 3 categories one is used as refrence sir kindly clear my confusion

@researchwithfawad Жыл бұрын

Create dummy variables only if the categorical variable has 3 or more categories. Even if used as moderator, dummy is not created if it has two categories.