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Пікірлер
@hipnox1818 5 күн бұрын
Excelent
@wafflelios 29 күн бұрын
господи, я вас люблю, спасибо, вы единственный, кто объяснил эту тему в интернете
@sangwoo.statistics 29 күн бұрын
Спасибо большое. Будем на связи.
@ZahidRahimov Ай бұрын
Dear Professor, thank You so much for your tremendous effort. You are truly helping those who are learning. May God grant You health and the desire to continue your work.
@samialmoazzez8717 Ай бұрын
Hi, tnx, plz recalculate for left & interval censored data
@ZahidRahimov Ай бұрын
Dear Professor, thank you for the valuable lesson. I am your fan and eagerly await your new lessons!
@sangwoo.statistics Ай бұрын
Hi, Zahid. Thanks for your comments. Sorry for not uploading new videos recently due to personal busy workload. I will try to upload more videos when I am ready. :) Cheers, Sangwoo.
@ZahidRahimov Ай бұрын
@@sangwoo.statistics Good day dear professor, i couldn't send you an e mail, If you don't mind, I wanted to write an email
@sangwoo.statistics Ай бұрын
@@ZahidRahimov Sure. Plz, send me an email via my gmail address. You can find it in my youtube contents (Sorry, I can't leave my email here due to many spam emails)
@MJ-wi2bf 2 ай бұрын
The second value of data should be from t+1 aint it?
@nothinghere8510 3 ай бұрын
This is great - could you show how to get information matrix and standard errors for simple logistic regression with binary outcome and a continuous IV?
@oscarw7805 3 ай бұрын
This was super helpful, finally a way to dynamically calculate regression models. I am now using your video to build a tool that allows users to run difference -in-difference regressions for user-selected variables. Thanks a lot for your effort, again super helpful!
@YouTubeshortsandreelsface 3 ай бұрын
Share sheet link
@imamsafawi6413 3 ай бұрын
thanks for sharing this very useful video..
@hsahil_10 4 ай бұрын
Thank you
@PRAMODSALUNKHE-v7o 4 ай бұрын
Thank you for your video. How to expand the same for more than one independent variables (X1,X2,X3,.....)?
@PRAMODSALUNKHE-v7o 4 ай бұрын
Thank you !!!.How to expand the same for more than one independent variables (X1, X2, X3, etc.)
@ldsharma6546 5 ай бұрын
Hello Sir, could kindly make a video on how to calculate Lin's Concordance coefficient in r-studio.
@cjgm 5 ай бұрын
legend thanks
@farelrusde9637 6 ай бұрын
Dear prof, thank you much your explanation video, it really help me on my project But i have a question, what should i do if i have more than two levels on the dataset, since df can,t be 0 and 1 anymore I will really appreciate your help, thank you
@Paan-2.1 6 ай бұрын
Hello :) Is it possibile (or even right) to split the ratings when you have to many combinations? So that a part of the participants rate the first half of all "cards"? Because i guess my RStudio cant handle the NA in every row..... And thank you very much for this video. It was very helpful!
@jimrobison374 7 ай бұрын
Very helpful. Best description of Bartlett's test in Excel I have found.
@faniafifahputri1226 7 ай бұрын
First of all, I would like to thank you for making a video about Cox Ph. I did research regarding Cox Ph and tried to find a solution in Excel, but in the solver tool the CoEF results were not appropriate and the LL sum value after being maximized, the results were invalid. how to find the solution? 6:46
@TheJoosd 7 ай бұрын
What do I do if I add the 0, but still get the same message?
@BoZhaoengineering 7 ай бұрын
Professor, thank you for your instruction. I conduct a reliability analysis, especially when the sample size is small. I have tried Monte Carlo and MLE. Ranking Regression is very suitable for small sample size inference.
@viniciuslima2659 8 ай бұрын
THANKS
@zulf4hm1 8 ай бұрын
Hi Mr SangWoo, I work in a Korean company & very happy to discover your channel. If I may ask, how do we get the turf analysis tool in Excel? Is it downloadable? Thank you very much 🙏
@sangwoo.statistics 8 ай бұрын
Hi. Thanks for watching my youtube video. Please send me an email via my Gmail to share the Excel file. Cheers, Sangwoo.
@petrovayuliya7470 8 ай бұрын
thank you so much! Very useful and clear
@luizakulchetscki2970 8 ай бұрын
Hello! Thank you so much for your detailed explanation. I have been at this for hours, and I can't figure out why about halfway through the data on my F(Yn+1-i) column turns into the #N/A error message, and no matter what I do it won't change. I have a n=1046. Right at mark 525 it gives me the error sign. Any thoughts?
@sangwoo.statistics 8 ай бұрын
Hi, Luisa. Thanks for watching my KZbin video. Could you share your working file via my Gmail to have a look?
@MilicaD_M7 9 ай бұрын
Thank you very much for the video.
@yuhanliu5505 9 ай бұрын
Dear Prof, thank you very much for sharing this video! I am a phd student and i just started a project with a discrete choice experiment. I am now analyzing the data, but i am struggling with the differences between multinomial logit (mlogit) and conditional logit (clogit). How should i differ between these two, and which one should i use? Thank you so much in advance!
@sangwoo.statistics 9 ай бұрын
Hi, Yuhan. Thanks for watching my youtube video and contacting me. Sorry for late response because I spend my working time on doing data business nowdays. Having said that, I don't think I can give you clear answer for your question. How about reading and studying the following pager? zhanksun.github.io/files/Multinomial%20and%20Conditional%20Logit%20Models.pdf I hope it gives you helpful clue.🙂 Many thanks, Sangwoo.
@yuhanliu5505 9 ай бұрын
@@sangwoo.statistics Thank you for your reply! The reference is super helpful. :)
@Fujit_01 9 ай бұрын
Thanks, that was very helpful
@DuniaUnik99 9 ай бұрын
may I get your excel about this?
@sangwoo.statistics 9 ай бұрын
Please send me an email via my gmail to share the file. Many thanks, Sangwoo.
@chaimaaazzouzi7363 9 ай бұрын
Thank you for the video, When we have more X vairable, X1,X2,X3.. how do we calculate the denominator please
@saptasuhardono1772 10 ай бұрын
Thanks Prof
@mariamadiop3534 10 ай бұрын
And how to plot Weibull fit graphs please?
@mariamadiop3534 10 ай бұрын
Hello Sang sir Could you help me determine the weibull parameters and maximum likelihood for each modality of a variable with R?
@GloatingPenguin 10 ай бұрын
Great video thaks!
@adamramadhan6333 10 ай бұрын
Hello sir, thankyou so much for your tutorial, its helpfull for me to finish my study, once again thankyou sirr
@NURAMELIYABINTIAWAHABUPM 10 ай бұрын
hi may i know how to import my excel file into R programming,
@Yes_Piano 11 ай бұрын
Hello, If out of 100 items only 26 items failed the same "B" value row that you write - how the other 74 items which did not fail affect on shape and scale parameters?
@Tggy10 11 ай бұрын
This is great, but I'm having trouble with 2 issues. 1. Is there a way to get intercept via excel? 2. For other AR models, is the equation the same principle (AR3 =intercept+xvar1*(previous value - mean)+xvar2*(2nd previous value - mean) + xvar3*(3rd previous value -mean)? THANK YOU
@ZahidRahimov Ай бұрын
Hello Sir, just substitute intercept with mean in formula and everything will be OK. Y_t=Y ˉ+b_1 (Y_(t-1)-Y ˉ)+b_2 (Y_(t-2)-Y ˉ)
@g00d_luck 11 ай бұрын
새해 복 많이 받으세요!
@athallawattimena2591 11 ай бұрын
Hi Professor, about data(tea) that you used in the video, did you get from the Rstudio itself or was that your own data ? If that was your own data, can i get it to try the data by myself ? thanks
@sangwoo.statistics 11 ай бұрын
Hi, Athalla. The tea data is available from library(conjoint) in R. Please visit the following link for further information. www.rdocumentation.org/packages/conjoint/versions/1.41/topics/tea Many thanks, Sangwoo.
@syarifahmardhiah5103 Жыл бұрын
I am now trying to do mle with normal distribution, using 5 variables If perhaps you can make a video on that
@sangwoo.statistics 11 ай бұрын
Thanks for watching my videos. Please send your data via Gmail, then I will try to make the Excel for you. Many thanks, Sangwoo.
@guilhermebrito4837 Жыл бұрын
I didn't know the vectorial form of the correlation! Thanks for sharing!
@ujjwalroy8835 Жыл бұрын
In general case how to estimate the parameters without a dataset using mle method?
@sangwoo.statistics 11 ай бұрын
Hi, Ujjwal Roy. Sorry for late response. Could you explain more about "without a dataset using mle method?". Many thanks, Sangwoo.
@ujjwalroy8835 11 ай бұрын
@@sangwoo.statistics No problem Sir, my problem already got sorted out. Thanks 🙏
@salaheddinesarihassoun3861 Жыл бұрын
Thank you very much
@taiwankyh Жыл бұрын
It is better for textbook
@taiwankyh Жыл бұрын
Thanks so much for the helpful video
@미니미니-o7y Жыл бұрын
데이터 기반의 컨텐츠 너무 감사합니다. 항상 제게 인사이트를 주십니다~
@sangwoo.statistics Жыл бұрын
감사합니다. 열심히 하겠습니다. 그런데 누구이실끼요??
@미니미니-o7y Жыл бұрын
@@sangwoo.statistics 시공간 데이터 품질인증심사원 김순연이예요~
@YJ-Won5183 Жыл бұрын
직관적인 설명에 감사드립니다. 박사님
@sangwoo.statistics Жыл бұрын
네. 감사합니다. 좋은 소식 많이 들려주세요~~
@JosephBandanaa Жыл бұрын
Many thanks for your video. Uisng the mlogit package, I have this error:: Error in dfidx::dfidx(data = data, dfa$idx, drop.index = dfa$drop.index, : impossible to coerce the choice variable to a logical
@sangwoo.statistics Жыл бұрын
Hi, Joseph. Thanks for watching my KZbin video. I think this is one of the common issues when we use mlogit library. Please send your data via my Gmail. Then I will try to fix the issue you have. Many thanks, Sangwoo.
@KiittyZhang-o5w Жыл бұрын
Do you know any other longer dataset that are good for conjoint analysis?
@sangwoo.statistics Жыл бұрын
Hi, Zhiqing. Thanks for contacting me. Not sure how much you are familiar with SAS, but I strongly believe SAS document is very useful to get proper dataset for any type of data analysis. For choice based conjoint analysis, I think the following site is useful not only for data, also studying conjoint analysis. support.sas.com/documentation/onlinedoc/stat/ex_code/131/mlogit04.html The 2nd way to get dataset for conjoint analysis is to access R library, esp, mlogit. cran.r-project.org/web/packages/mlogit/mlogit.pdf Many thanks, Sangwoo.