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Sangwoo.Statistics Kim
India
เข้าร่วมเมื่อ 6 มิ.ย. 2020
This channel is to help and connect all people, who want to learn and share knowledge of statistics, in the world.
Please contact me if there is anyone who uses English as a mother tongue and wants to publish statistical book using my contents.
Please contact me if there is anyone who uses English as a mother tongue and wants to publish statistical book using my contents.
วีดีโอ
315 Data Structure for Pearson and Spearman correlation
มุมมอง 689 หลายเดือนก่อน
This video helps you understand the relationship between contingency table format and long data format to calculate Pearson's correlation and Spearman's Rho for ordinal association measurement.
314 Spearman and Pearson correlation for Ordinal Association Measurement in Excel.
มุมมอง 9510 หลายเดือนก่อน
This video helps you understand how to calculate the correlation for Ordinal Association Measurement while comparing R's output for Spearman's correlation. Reference www.statisticssolutions.com/ordinal-association/ documentation.sas.com/doc/en/statcdc/14.2/statug/statug_freq_details22.htm documentation.sas.com/?docsetId=procstat&docsetTarget=procstat_corr_details03.htm&docsetVersion=9.4&locale=en
2024년 리테일 동향
มุมมอง 12110 หลายเดือนก่อน
안녕하세요. 저희 마켓링크가 보유한 다양한 유통사 POS 데이터와 소비자 패널 조사 결과를 활용하여 2024년 리테일 동향에 관한 콘텐츠를 만들어 공유드립니다. 감사합니다.
313 Spearman's rho for Ordinal Association Measurement
มุมมอง 8611 หลายเดือนก่อน
This video helps you understand how to calculate the Spearman's rho to measure ordinal association from contingency table in Excel.
915 Linearity in Correlation
มุมมอง 5611 หลายเดือนก่อน
This video helps you understand the meaning of linearity in correlation analysis.
사랑2 (아마추어 색소폰 연주)
มุมมอง 9011 หลายเดือนก่อน
50대 저의 버킷 리스트 중 하나인 색소폰 연주입니다. 곡은 윤도현의 "사랑2"입니다. One of my bucket lists is to play my favorte musics by Saxophone. The title is "Love 2" by Yun Do-hyun.
312 How to get the "Approx T" for ordinal association measurement in Excel
มุมมอง 125ปีที่แล้ว
This video shows you how to get the "Approx T" for ordinal association measurement such as Kendall tau, Gamma and Somers' D in Excel. References www.statisticssolutions.com/ordinal-association/ Old) v8doc.sas.com/sashtml/stat/chap28/sect18.htm#freqscores New) documentation.sas.com/doc/en/statcdc/14.2/statug/statug_freq_details22.htm v8doc.sas.com/sashtml/stat/chap28/sect20.htm ibmi.mf.uni-lj.si...
914 Retail Spotlight Report (MarketLink)
มุมมอง 30ปีที่แล้ว
안녕하세요. 제가 근무하고 있는 마켓링크(www.marketlink.co.kr)에서 고객사분들에게 제공하는 Retail Spotlight Report를 소개해 드립니다. 감사합니다.
311 Somers' D for ordinal association measurement in Excel
มุมมอง 485ปีที่แล้ว
This video helps you understand how to get the Somers' D for ordinal association measurement in Excel. References www.statisticssolutions.com/ordinal-association/ Old) v8doc.sas.com/sashtml/stat/chap28/sect18.htm#freqscores New) documentation.sas.com/doc/en/statcdc/14.2/statug/statug_freq_details22.htm v8doc.sas.com/sashtml/stat/chap28/sect20.htm ibmi.mf.uni-lj.si/mz/2011/no-1/goktas.pdf
310 Kendall's Tau c (Stuart's tau c) for ordinal association measurement in Excel
มุมมอง 284ปีที่แล้ว
This video helps you understand how to get the Kendall's Tau c for ordinal association measurement in Excel. References www.statisticssolutions.com/ordinal-association/ Old) v8doc.sas.com/sashtml/stat/chap28/sect18.htm#freqscores New) documentation.sas.com/doc/en/statcdc/14.2/statug/statug_freq_details22.htm v8doc.sas.com/sashtml/stat/chap28/sect20.htm
309 Kendall's Tau b for ordinal association measurement in Excel
มุมมอง 467ปีที่แล้ว
309 Kendall's Tau b for ordinal association measurement in Excel
308 Gamma statistic for ordinal association measurement in Excel
มุมมอง 298ปีที่แล้ว
308 Gamma statistic for ordinal association measurement in Excel
913 How to calculate the angle of 2 Vectors in Excel
มุมมอง 1.1Kปีที่แล้ว
913 How to calculate the angle of 2 Vectors in Excel
307 Relative Risk, Risk Ratio and Rate Ratio in Excel and R
มุมมอง 585ปีที่แล้ว
307 Relative Risk, Risk Ratio and Rate Ratio in Excel and R
305 Odds Ratio : Confidence interval and p-value in Excel and R
มุมมอง 2Kปีที่แล้ว
305 Odds Ratio : Confidence interval and p-value in Excel and R
304 Odds Ratio : 5 ways to calculate it in Excel
มุมมอง 569ปีที่แล้ว
304 Odds Ratio : 5 ways to calculate it in Excel
303 Chi square test statistic : Residuals and Yates continuity correction
มุมมอง 153ปีที่แล้ว
303 Chi square test statistic : Residuals and Yates continuity correction
911 What ChatGPT can't do (from data analysis point of view)
มุมมอง 98ปีที่แล้ว
911 What ChatGPT can't do (from data analysis point of view)
302 Application of prop test and chisq test (AB test and Decision Tree)
มุมมอง 65ปีที่แล้ว
302 Application of prop test and chisq test (AB test and Decision Tree)
301 Proportion test and chi square test in Excel and R
มุมมอง 214ปีที่แล้ว
301 Proportion test and chi square test in Excel and R
300 Categorical Data Analysis (overview)
มุมมอง 249ปีที่แล้ว
300 Categorical Data Analysis (overview)
070 Maximum Likelihood Estimators of a multivariate normal distribution in Excal and R
มุมมอง 446ปีที่แล้ว
070 Maximum Likelihood Estimators of a multivariate normal distribution in Excal and R
069 Partial Correlation Matirx from Correlation Matrix
มุมมอง 285ปีที่แล้ว
069 Partial Correlation Matirx from Correlation Matrix
296 Proportional Hazard Assumption test and KM transformation for Cox PH model
มุมมอง 143ปีที่แล้ว
296 Proportional Hazard Assumption test and KM transformation for Cox PH model
295 (Scaled) Schoenfeld Residuals in Excel and R
มุมมอง 894ปีที่แล้ว
295 (Scaled) Schoenfeld Residuals in Excel and R
294 How to use plots for martingale residuals for Cox PH in R
มุมมอง 685ปีที่แล้ว
294 How to use plots for martingale residuals for Cox PH in R
The second value of data should be from t+1 aint it?
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?
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!
Share sheet link
thanks for sharing this very useful video..
Thank you
Thank you for your video. How to expand the same for more than one independent variables (X1,X2,X3,.....)?
Thank you !!!.How to expand the same for more than one independent variables (X1, X2, X3, etc.)
Hello Sir, could kindly make a video on how to calculate Lin's Concordance coefficient in r-studio.
legend thanks
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
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!
Very helpful. Best description of Bartlett's test in Excel I have found.
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
What do I do if I add the 0, but still get the same message?
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.
THANKS
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 🙏
Hi. Thanks for watching my youtube video. Please send me an email via my Gmail to share the Excel file. Cheers, Sangwoo.
thank you so much! Very useful and clear
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?
Hi, Luisa. Thanks for watching my TH-cam video. Could you share your working file via my Gmail to have a look?
Thank you very much for the video.
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!
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.
@@sangwoo.statistics Thank you for your reply! The reference is super helpful. :)
Thanks, that was very helpful
may I get your excel about this?
Please send me an email via my gmail to share the file. Many thanks, Sangwoo.
Thank you for the video, When we have more X vairable, X1,X2,X3.. how do we calculate the denominator please
Thanks Prof
And how to plot Weibull fit graphs please?
Hello Sang sir Could you help me determine the weibull parameters and maximum likelihood for each modality of a variable with R?
Great video thaks!
Hello sir, thankyou so much for your tutorial, its helpfull for me to finish my study, once again thankyou sirr
hi may i know how to import my excel file into R programming,
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?
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
새해 복 많이 받으세요!
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
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.
I am now trying to do mle with normal distribution, using 5 variables If perhaps you can make a video on that
Thanks for watching my videos. Please send your data via Gmail, then I will try to make the Excel for you. Many thanks, Sangwoo.
I didn't know the vectorial form of the correlation! Thanks for sharing!
In general case how to estimate the parameters without a dataset using mle method?
Hi, Ujjwal Roy. Sorry for late response. Could you explain more about "without a dataset using mle method?". Many thanks, Sangwoo.
@@sangwoo.statistics No problem Sir, my problem already got sorted out. Thanks 🙏
Thank you very much
It is better for textbook
Thanks so much for the helpful video
데이터 기반의 컨텐츠 너무 감사합니다. 항상 제게 인사이트를 주십니다~
감사합니다. 열심히 하겠습니다. 그런데 누구이실끼요??
@@sangwoo.statistics 시공간 데이터 품질인증심사원 김순연이예요~
직관적인 설명에 감사드립니다. 박사님
네. 감사합니다. 좋은 소식 많이 들려주세요~~
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
Hi, Joseph. Thanks for watching my TH-cam 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.
Do you know any other longer dataset that are good for conjoint analysis?
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.
Thank you very much. I ended up buying Mike Middleton's book.
Hi, Chris. I hope everrything goes well in studying statistics. Cheers, Sangwoo.
질문이 있습니다. DS나 통계쪽은 대학원이 필수라고 생각하시나요? 요즘 고민입니다 ㅠㅠ
안녕하세요. 고민이 많으실 것 같습니다.. 저의 조언은 여건이 되신다면 대학원 추천을 드리구요, 여건이 안된다면 관련 분야에 취업을 한 후 3~5년 후에 학업 병행을 통해 석박사 통합 과정을 추천드립니다~
답변 감사합니다!!
제부 멋져요!♡
감사합니다~♡♡
제부 너무 멋있어요!♡
못하는게 없군요 ~~
감사합니다.♡♡