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Sohaib Ameer
Добавлен 28 мар 2014
How to create index using PCA in SPSS
Learn how to create index through PCA using SPSS.
Просмотров: 41 479
Видео
How to create index using Principal component analysis (PCA) in Stata
Просмотров 85 тыс.7 лет назад
This is a step by step guide to create index using PCA in STATA. I have used financial development variables to create index. . . . For more videos please subscribe to my channel.
Easy and well explained. Thanks
THANK YOU Ameer S.
how we can estimate the scores of these variables?
Sir if we have some variable which is negatively related and some have positive relationship, so what should we do in that case. In normalization we have two different formulas for negative and positive relationship with defended variable for index making through normalization and aggrigation, but my question is what should we do if we apply PCA
hey thanks for the useful video. I have just one query, Do we need to standardize the variables when applying PCA command in STATA 17 or applying the PCA command will work only? will it automatically standardize the data when PCA cmd is applied? Thanks
The command standardises data automatically
did you find the answer? can you please kindly tell me
Hello , I need information on how to calculate Livelihood Vulnerability Index. Thanks
Dear Sohaib Ameer. Being a professional we must follow the ethics and rules of every profession. You just run the pca command and predict the index without going in details analysis of the reslults. WE must ensure the credibility and reliability of the index that is going to represent an issue in the research paper. As I know the process of PCA is not much easy as you explained here. There are lots of things that being a researcher we must ensure.
Dear @khadim you should create a video to cover up all those " lots of things that being a researcher must ensure." Wasaalam
Many thanks for this video. Very helpful. I want to understand a basic thing. Why is the weighted index value (here the fd) more than 1? It should ideally be 0-1. Can you please clear my doubt.
Sir how to find out the concentration index of inequality using STATA?
Hello, great work and illustrative. But, i guess you make not an index, this is each component you should be multiply by varianze factor 45%, 22% y 8%, if dont remember bad, the result is a global index and this is a FA not a PCA, if you had used a PCA just should be used just 5 variables and construct an index by this varaiables. By the way, in my opinio with two component is neccessary, the explained variance is almost 70%. Greetings and great work, again.
do you know how i can make pca index
Thanks a lot. It is very useful.
You should clarify the basics like why PCA on which type of variables PCA is applicable. Hiw to scale different variables etc.
Please, did you ever get an answer to this question?
Never
@@Jatindersingh-wo5hf in terms of scaling, when should i use standardization or normalization? can you kindly tell me about this
@@Chamomile136 see these are different type of tools to make data unit free.so u can use both
@@Jatindersingh-wo5hf thank you, i want to ask one more question. If i have 2 variables, one is better if the number is greater and the another is worse is the number is greater, then how can i rescale this?
All variables are having positive values. But, your FD index is having both positive and negative values. As I understand, the index should not have negative values. How to interpret the negative index values?
Thank you!! Your video helped a lot!
well explained bro
Do stata standardized variables automatically?as you haven't standardized the variables. variables with different scales need standardization.
Thank you very useful. I want to construct an index using two-step PCA. This is the first step. Is it possible to shed light on 2 things: 1. How to carry out 2nd step when I get the results (prediction) from each dimension? 2. How to convert the result (prediction) to an index between 0 and 1
please tell which variables you have used to make FD
Thank you
can you please show me how to construct wealth index using SPSS?
How can I make the Index lie between 0 and 1 ?
Use Normalised values then you will be able to get index value between 0 and 1.
@@manish9555 Well, standard deviation did not work. But, using a rescaling process of the index got the job done.
@@JMRG2992 hi, can you please advise with this?
@@clarajoanjoachim2179 Once the PCA is estimated, you can compute the first principal component of the PCA. with that, you can rescale the principal component into an index between 0 and 1. The process, implies the formula: Xi - X max / Xmax - Xmin
@@JMRG2992 thanks, I was thinking if to rescale the variables first (using the formula you gave) and only apply PCA. does it makes any difference?
Thank you so much
Can we do PCA for all the cross-sections (i.e. Pakistan, India etc) together?
Did you figure out how do you PCA for cross-sections?
Thanks so much so helpful < 3
Thank you. But I see one mistake. You found that it makes sense to take two components of the pca operation since it was showing an eigenvalue greater than 1 for the first 2 components, then why did you predict only the first component. This will lose a lot of information. You should've used: predict pc1 pc2
what happens after predicting pca1 and pca2. You’ll obtain two variables. Is the sum of the two going to be your index now? Kindly advise!
how can i predict pc1 pc2? what command should i use? would you please kindly tell me how i can get the result of the index after predict those 2 pc?
I want to calculate the weighted value based PCA of multiple criteria for the analysis of agricultural drought. Please tell me how can do it
hi, i just saw your video, not related to my problem. I want make the index of 5 different variables on the basis of decile rank. your cooperation considered highly appreciated in this regard.. thanks
I need this too. Please were you able to do it? dokipartydan@gmail.com
thank you sir really more informative, sir if its possible plz upload a video about extreme bound analysis
How to get the score of each PC please
Where is the index
Thank you!!! You have simplified this process so well and understandable even by non-experts!!
Thank you so much, I couldn't figure it out for hours until I found this video. Literally a lifesaver
How do you construct the index then?
Can you please explain why did you rotate the values?
I think this was all about PCA but could not understand how to make index?
please show the scale of the variable representing financial development, i want an answer please..
hello, can you guide me about PCA, how to organize the data of compounds in excel for PCA and how to analyze? thanks
Shouldn't the base year be equal to 100 (or 1) for an index?
can you please say which variables did you take
What happens when i want 3 pc for my ibdex?
What is the purpose behind selecting regression while displaying factor scores??
बहुत अच्छा शुक्रिया!
hi my reasearch title is the role of credit on women economic empowerment and can i use tobit model how can i use please show me
Helps a lot
Many thanks Sohaib. It was a great video
very informative and helpful. Thank you sir for uploading
Hi, exactly what are the weigths for each variable? or how can i find it?
It is more informative video, thank you so much for that. How about if we have binary response for items (like tv) and combination with continuous variable (number of bicycle)? Can we use pca or polychoric pca? One more, what is the implication of negative fd value in you output?
How to treat messing values? I watched your video in spss. but stata menus dont have those options in spss. please answer Im in trouble.
How to treat missing variables in stata.
Can I apply this procedure to a group of 10 variables with different scoring procedure
Yes you can..because it will standardized them..