xan mos
xan mos
  • Видео 29
  • Просмотров 287 856
Introduction to Survival Analysis
This video begins with the Kaplan-Meier curve, followed by the Log-rank test. Finally, standard Cox regression as well as its proportional hazard assumption is introduced.
Data sets may be downloaded at drive.google.com/drive/folders/1rh5jBaWfldoA62eVyluxghZQ-jrUFdkJ?usp=sharing
Video chapters:
0:00 Introduction
2:25 Sketching a Kaplan-Meier curve
6:38 Log-rank test (manual calculation)
34:26 Hazard ratio and Cox regression
56:44 Proportional hazard assumption
Просмотров: 669

Видео

Normal Probability Distribution
Просмотров 3,3 тыс.2 года назад
This video is about the normal probability distribution, from finding probabilities involving standard normal distribution to finding z (given probabilities). Finding the p-value in a standard normal distribution, as well as generating the critical values for z-tests were also discussed. At the latter part of the video, applications to word problems were given. Link for the normdist.pdf: drive....
Tests of Independence [χ^2 test (incl. Yate's continuity correction) and Fisher's exact test] in R
Просмотров 1,1 тыс.2 года назад
This video begins with the use of the Chi-square test of independence, followed by some suggestions (Yate's continuity correction and Fisher's exact test) when there are expected counts less than 5 (in more than 20% of the total number of cells). Link of research article by Kim (2017): www.ncbi.nlm.nih.gov/pmc/articles/PMC5426219/pdf/rde-42-152.pdf Data sets and handout (in pdf format) may be d...
Inference involving Proportions [z-test for proportions & Chi-square test of homogeneity] in R
Просмотров 1,2 тыс.2 года назад
This video begins with the manual calculations and concepts the z-test for single proportion and two proportions, as well as the Chi-square test of homogeneity. Use of R (or RStudio) are demonstrated at the latter part. Data sets and handout (in pdf format) may be downloaded at drive.google.com/drive/folders/1rh5jBaWfldoA62eVyluxghZQ-jrUFdkJ?usp=sharing Video Chapters: 0:00 Intro 0:13 Overview ...
Analysis of Variance [Fisher's, Welch's & Repeated Measures, incl. applications using R or RStudio]
Просмотров 1,7 тыс.2 года назад
This video begins with the manual calculations and concepts of the Fisher's one way analysis of variance. Welch's ANOVA and Repeated Measures ANOVA follow afterwards. Use of R (or RStudio) are demonstrated at the latter part. Post hoc analysis are also discussed, as well as comparison of ANOVA with t-tests for two means. Data sets and handout (in pdf format) may be downloaded at drive.google.co...
Inference involving Two Means [Student's, Welch's, Paired t-test] including using R (or RStudio)
Просмотров 2 тыс.2 года назад
This video begins with illustration on situations where Independent t-tests (Student's, and Welch's), z-test for two means and Paired t-test are applied. It is followed by real-life examples and demonstrations on how performed in R (or RStudio). Data sets and handout (in pdf format) may be downloaded at drive.google.com/drive/folders/1rh5jBaWfldoA62eVyluxghZQ-jrUFdkJ?usp=sharing Video Chapters:...
Introduction to Hypothesis Testing: Statistical Inference involving μ (One-sample z-test & t-test)
Просмотров 1,7 тыс.2 года назад
This video introduces concepts of statistical inference. Examples are given on how manual computations are done, as well as on how to perform the statistical tests demonstrated using R or RStudio. Data files and handout (in pdf format) may be downloaded at drive.google.com/drive/folders/1rh5jBaWfldoA62eVyluxghZQ-jrUFdkJ?usp=sharing Video credits to: 1. Introduction to the t Distribution (non-te...
Normal Probability Distribution [using pnorm and qnorm functions in R (or RStudio)]
Просмотров 2,8 тыс.2 года назад
This video is about the use of pnorm and qnorm functions in R (or RStudio). Video Chapters: 0:00 Intro 0:22 How to Install R 1:15 The pnorm function 3:28 The qnorm function 6:36 Getting the p-value using the pnorm function 7:24 Answering word problems using the pnorm and norm functions 10:10 P(X = x) = 0 11:14 Short exercise
Descriptive Statistics using R (an Introduction)
Просмотров 1,2 тыс.2 года назад
This video is about basics of R, from creating an object (vector) to importing tab-delimited and excel file where descriptive statistics are computed from. Descriptive statistics are generated using R. At the end of the video, the use of aggregate function is demonstrated. The sample1.txt and sample1.xlsx file may be downloaded at drive.google.com/open?id=1rh5jBaWfldoA62eVyluxghZQ-jrUFdkJ. Begi...
Study Designs in Medicine
Просмотров 1,1 тыс.2 года назад
This video gives an overview of Study Designs in Medicine, such as the Basic Studies, Observational, Experimental, Systematic Review and Economic Evaluation. Examples are given at the end of each study design. Reference material: www.ncbi.nlm.nih.gov/pmc/articles/PMC4318396 Videos credits to: (1) Biostatisticians: Do You Know What They Do? | TomorrowsMed ruclips.net/video/5A0lg3p6pvI/видео.html...
Descriptive Statistics using Microsoft Excel (including the Analysis Toolpak)
Просмотров 3,9 тыс.4 года назад
This is a continuation of the video Descriptive Statistics (ruclips.net/video/UqcYqNfjFis/видео.html), showing how to use Microsoft Excel in calculating the Measures of Central Tendency, Other Position, and Variability. Analysis Toolpak was also used in calculating the Descriptive Statistics. Link about the 9 ways to calculate the Percentile (Quantile): www.rdocumentation.org/packages/stats/ver...
Descriptive Statistics [Measures of Central Tendency, Other Position, and Variability]
Просмотров 11 тыс.4 года назад
0:00 Introduction This video is about the common descriptive measures, such as: Measures of Central Tendency 00:15 • Mean 00:21 • Median 07:04 • Mode 16:49 Measures of Other Position 20:10 • Quartile • Decile • Percentile Measures of Variability 30:58 • Range 31:14 • Interquartile Range 32:13 33:51 Creating a boxplot 35:26 Detection of outlier using quartiles • Mean Absolute Deviation 38:46 • V...
Introductory Concepts in Statistics
Просмотров 7 тыс.4 года назад
This is an introductory video about statistics. Topics include the definition of statistics, graphs, and differentiation of Descriptive vs Inferential Statistics, Population vs Sample, Parameter vs Statistics, and Variable vs Constant. Levels of measurement were given emphasis at the end of the video. Chapters of the video: 0:00 Introduction 0:14 Definition of Statistics 1:00 Descriptive and In...
Classification Models Using RapidMiner™
Просмотров 16 тыс.4 года назад
This video presents how to perform classification models in RapidMiner™. An example using Decision Tree is demonstrated in the video. The Adsapproval.xlsx may be downloaded at drive.google.com/open?id=16JaoMftvKJPxHw9CMueV_kdFQ4FSgm4k
Applications of Modular Arithmetic
Просмотров 27 тыс.4 года назад
This video demonstrates applications of modular arithmetic. 0:00 Introduction 00:24 Verification of ISBN (International Standard Book Number) 05:51 Verification of UPC (Universal Product Code) 08:36 Validation of credit card number [Luhn algorithm] 11:57 Identification of the day of a given date using the Zeller's congruence Video links of the clips used: 1. 11.11.11 | Numberphile ruclips.net/v...
Modular Arithmetic and Modulo Congruence
Просмотров 36 тыс.4 года назад
Modular Arithmetic and Modulo Congruence
Methods of Apportionment
Просмотров 21 тыс.4 года назад
Methods of Apportionment
The Mathematics of Voting
Просмотров 13 тыс.4 года назад
The Mathematics of Voting
Reasoning: Validating Arguments using Binary Operations
Просмотров 13 тыс.4 года назад
Reasoning: Validating Arguments using Binary Operations
The Language of Mathematics and Symbols
Просмотров 45 тыс.4 года назад
The Language of Mathematics and Symbols
Mathematics in Our World
Просмотров 47 тыс.4 года назад
Mathematics in Our World
Receiver Operating Characteristic (ROC) Curve Analysis for Optimal Cut-off in Disease Identification
Просмотров 16 тыс.4 года назад
Receiver Operating Characteristic (ROC) Curve Analysis for Optimal Cut-off in Disease Identification
Binary Logistic Regression using R (or RStudio)
Просмотров 7 тыс.4 года назад
Binary Logistic Regression using R (or RStudio)
Multiple Linear Regression using R
Просмотров 1,3 тыс.4 года назад
Multiple Linear Regression using R
Correlation and Simple Linear Regression using R
Просмотров 2,6 тыс.4 года назад
Correlation and Simple Linear Regression using R
Diagnostic Test
Просмотров 1,3 тыс.4 года назад
Diagnostic Test
Odds and Odds Ratio
Просмотров 1 тыс.4 года назад
Odds and Odds Ratio
Risk and Risk Ratio
Просмотров 6754 года назад
Risk and Risk Ratio
Quick Review: Conditional Probability
Просмотров 1,1 тыс.4 года назад
Quick Review: Conditional Probability

Комментарии

  • @reynaldomarticio1181
    @reynaldomarticio1181 5 дней назад

    how to contact u?; Tnx

    • @xanmos
      @xanmos 4 дня назад

      My email address is in the channel description. Thank you

  • @sb9190
    @sb9190 Месяц назад

    Very useful, clear explanations. Thank you.

  • @ilanbar1970
    @ilanbar1970 3 месяца назад

    Thank you! Well explained

  • @vasu.12
    @vasu.12 4 месяца назад

    Thank you so much. It's amazing. You saved my life..

  • @ivnlvane9609
    @ivnlvane9609 4 месяца назад

    galing, slayyy

  • @sasht
    @sasht 4 месяца назад

    Very helpful. Thanks a lot.

  • @drfuzzy73
    @drfuzzy73 5 месяцев назад

    Very well explained. Step-by-step and easy to understand. Thank you

  • @DB-kv3wu
    @DB-kv3wu 6 месяцев назад

    It is very informative video! Thank you for your ❤ tutor!

  • @kazuoSuzuki-s6l
    @kazuoSuzuki-s6l 6 месяцев назад

    This is the best explanation and I really appreciate this. It is just fantastic !!!!!!

  • @shylasolis1824
    @shylasolis1824 8 месяцев назад

    Do you have the PPT that you slightly show during your youtube presentation available somewhere?

  • @matildaawoking3950
    @matildaawoking3950 9 месяцев назад

    Thank you sir. This was extremely helpful

  • @NishantSewgobind
    @NishantSewgobind 10 месяцев назад

    Thanks for the video, nice explanation. Could you please explain why the values of J in ID's 19 and 20 are neglected? They have the highest J indices...

    • @NishantSewgobind
      @NishantSewgobind 10 месяцев назад

      I'm sorry I meant the J indices at 17:39 min. ID 19 has J = 0.798 and ID 20 has J = 0.909. Still, ID 12 with J = 0.616 is chosen as the cut off.

    • @xanmos
      @xanmos 10 месяцев назад

      ​@@NishantSewgobind Oh that one. In ID 19, Sens = 0.0909 and Spec = 0.889, so J index is 0.0901 + 0.889 - 1 = -0.02 (not 0.798), while for ID 20, Sens = 0.0909 + Spec = 1, so J index is 0.0909 (not 0.909) . Im sorry about that but i think there was a typo error on those two in the powerpoint i used. THANKS A LOT for raising that concern. I didn't see that. Nonetheless, the Max J index is still the one at ID 12, which J index is 0.616.

    • @NishantSewgobind
      @NishantSewgobind 10 месяцев назад

      @@xanmos aha! Thanks for the explanation, really appreciated 😄👍

  • @oluchukwuokorie9064
    @oluchukwuokorie9064 11 месяцев назад

    Great explanation. 👍

  • @armipasiwat
    @armipasiwat Год назад

    Hi Sir, do you accept statistical analysis for research po? Thank you.

  • @sharradoveyranuja2593
    @sharradoveyranuja2593 Год назад

    I want to express my sincere appreciation for your efforts in creating this valuable resource. Your commitment to sharing knowledge and helping others understand descriptive statistics using Microsoft Excel is truly commendable. Thank you so much!

  • @sharradoveyranuja2593
    @sharradoveyranuja2593 Год назад

    I particularly enjoyed how you presented the information in a clear and concise manner, making it easy to follow along and understand even complex concepts. Your expertise on the subject matter truly shines through, and I found myself engaged from start to finish. Thank you!

  • @sharradoveyranuja2593
    @sharradoveyranuja2593 Год назад

    The content was incredibly enlightening and provided me with valuable insights on concepts of statistics. I look forward to watching more of your videos in the future and continuing to learn from your expertise.

  • @lanieroz6731
    @lanieroz6731 Год назад

    Thanks a lot sir, this is a very big help for me. This is an advance learning for me for our next class about ms excel. Keep making a lot this kind of video sir.

  • @andreajhustine2408
    @andreajhustine2408 Год назад

    This video is a big help for us as we explore statistics. I will watch it over and over again as my reviewer. Thank you, Sir!

  • @andreajhustine2408
    @andreajhustine2408 Год назад

    I'm not really good with statistics. But thank you for this video, Sir, because this will serve as my guide in doing our research. This will also help me understand the concept of statistics, particularly descriptive statistics.

  • @lanieroz6731
    @lanieroz6731 Год назад

    It's a very big help for us to learn about this sir. Thank you sir and keep making this kind of videos.

  • @andreajhustine2408
    @andreajhustine2408 Год назад

    Thank you, sir! I found my guide in calculating the Measures of Central Tendency, Other Positions, and Variability. Also, the Analysis Toolpak in calculating the Descriptive Statistics will be of help to me in the future. Not really good with MS Excel that's why this video will be very useful to me.

  • @PeteGloria-uy8jb
    @PeteGloria-uy8jb Год назад

    Easy to understand, very informative.

  • @PeteGloria-uy8jb
    @PeteGloria-uy8jb Год назад

    Very helpful ❤️

  • @PeteGloria-uy8jb
    @PeteGloria-uy8jb Год назад

    This video helps my understand the concepts of statistics it proves to be highly informative and remarkably conducive to effective learning..

  • @jedielcorminal8242
    @jedielcorminal8242 Год назад

    Since I'm not good in using excel, but you sir taught what to do and I understood easily. Thank you, sir!

  • @jedielcorminal8242
    @jedielcorminal8242 Год назад

    It's fun to go back to the mean, median, mode like you're in senior high. Thanks a lot sir for this nice and instructive video!

  • @jedielcorminal8242
    @jedielcorminal8242 Год назад

    This is really a big help for us to develop our critical thinking and analytical skills. We learned a lot from you, thank you sir!

    • @PeteGloria-uy8jb
      @PeteGloria-uy8jb Год назад

      Astilan mura jud ug nag kuan oh 🙄 bang suko HAHAHAHAH

  • @edzelescobido8830
    @edzelescobido8830 Год назад

    Thank you for demonstrating to us the Descriptive Statistics using Microsoft Excel sir, (including the Analysis Toolpak). it is straight forwards explanations and example. Thank you! ESCOBIDO, EDZEL P. BSBA FM - 3 ✅ Done

  • @edzelescobido8830
    @edzelescobido8830 Год назад

    After watching this, I deeply realize how important Descriptive Statistic is. It further enlightens me about this topic. God bless sir and more powers to come! ESCOBIDO, EDZEL P. BSBA FM - 3 ✅ Done

  • @jezabelnogalo8447
    @jezabelnogalo8447 Год назад

    MS Excel is very essential nowadays especially in business industry. To be honest, I’m not good with this but will try by best to learn and improve more. It’s very helpful for us beginners with this tutorial. Thank you!

  • @jezabelnogalo8447
    @jezabelnogalo8447 Год назад

    As an average student, what I need right now is dedication to learn this topic. This would be a big help for us especially we have a research. Thanks a lot, sir!

  • @francedeanniellemozar
    @francedeanniellemozar Год назад

    Keep sharing your valuable tips, learning a lot from you. Thanks.

  • @francedeanniellemozar
    @francedeanniellemozar Год назад

    Keep sharing your valuable tips, learning a lot from you. Thanks.

  • @lanieroz6731
    @lanieroz6731 Год назад

    This lecture is also tackled by my professor, and all I can say is that everything we do is connected in statistics. t's like how we budget our allowance is also part of statistics.

  • @francedeanniellemozar
    @francedeanniellemozar Год назад

    I learn more from your videos

  • @edzelescobido8830
    @edzelescobido8830 Год назад

    A pleasant day to each and everyone. I must say that this lecture helped me a lot in terms of understanding the truth behind Statistics in our world. It is indeed that through the years, everything evolves over time, and that include Statistics. Thank you so much Sir for this informative lecture. ESCOBIDO, EDZEL P. BSBA FM - 3 ✅ Done

  • @jezabelnogalo8447
    @jezabelnogalo8447 Год назад

    We can’t deny the fact that stat is everywhere. Therefore, stat is part of our daily lives.

  • @JohnDianing
    @JohnDianing Год назад

    What's the difference between descriptive and inferential statistics? Descriptive statistics summarize the characteristics of a data set. Inferential statistics allow you to test a hypothesis or assess whether your data is generalizable to the broader population

  • @alinuh5564
    @alinuh5564 Год назад

    Anyway it’s excellent to learn and understand underpinning knowledge in ROC and cut off determinations

  • @alinuh5564
    @alinuh5564 Год назад

    Can i share that SPSS can now calculate younden’s index or J stat Used SPSS V29

    • @xanmos
      @xanmos 11 месяцев назад

      thank u. I just got spss trial version and yes, there’s youden index already 🥳

  • @alinuh5564
    @alinuh5564 Год назад

    This is the best explanation of Co and ROC I came across Very good basic math and statistics foundation combined with good examples Many thanks

  • @MarvinBernardo-cb5ur
    @MarvinBernardo-cb5ur Год назад

    Just started to learn R. This is so helpful thank you. Very clearly explained.

    • @xanmos
      @xanmos Год назад

      Thank u. I hope u have time to browse my Biostatistics playlist. As all common statistical tests are there. You may take a look at it at ruclips.net/p/PL2C53YS1opmok4jqg_568gPnwFja6Zds2.

  • @diegoamaya5756
    @diegoamaya5756 Год назад

    Thank you so much

  • @samira7681
    @samira7681 Год назад

    thank you so much!! You explained this so clearly, understandably and thoroughly! thanks a lot

  • @Linakit61
    @Linakit61 Год назад

    Short but concise :) More Power Sir

  • @wasafisafi612
    @wasafisafi612 Год назад

    could you demonstrate how to add two graph curve?

    • @xanmos
      @xanmos Год назад

      It can be done using the pROC package in R or RStudio (not using optimalCutoff package). Thank you for watching and appreciating my work. :)

    • @wasafisafi612
      @wasafisafi612 Год назад

      Good day. I would like to ask for your help. If I want to calculate the sensitivity and specifity for a different cut-off point, how do you run it in R using the same package? Thank you for your help in advance

  • @wasafisafi612
    @wasafisafi612 Год назад

    Thank you so much for this video. You help me a lot in writing my proposal. It is going to help me a lot in my project. May God bless you abundantly. Gracias