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math et al
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Добавлен 27 июн 2015
Hello! I'm a math (and other things) channel.
I mostly record myself solving statistics and math problems.
I mostly record myself solving statistics and math problems.
Genetic Correlation
How to calculate the genetic correlation between phenotypes from two genome-wide association studies.
Thanks for watching!! ❤️
// LDSC software
github.com/bulik/ldsc
// Python code
github.com/mathetal/Python/blob/d1784b94453734247be47ae4e54968d588df5465/genetic_correlation.py
// Psychiatric Genomics Consortium
pgc.unc.edu/
// How to create a python2 environment
stackoverflow.com/questions/24405561/how-to-install-two-versions-of-anaconda-python-2-and-3-on-mac-os
// eur_w_ld_chr data
ibg.colorado.edu/cdrom2021/Day06-nivard/GenomicSEM_practical/
// Timestamps
0:00 Introduction
1:27 LDSC python environment set-up
5:09 Munge summary statistics
13:33 Genetic correlation
15:58 Comparison to paper
Tip Jar 💐
☕️ ko-f...
Thanks for watching!! ❤️
// LDSC software
github.com/bulik/ldsc
// Python code
github.com/mathetal/Python/blob/d1784b94453734247be47ae4e54968d588df5465/genetic_correlation.py
// Psychiatric Genomics Consortium
pgc.unc.edu/
// How to create a python2 environment
stackoverflow.com/questions/24405561/how-to-install-two-versions-of-anaconda-python-2-and-3-on-mac-os
// eur_w_ld_chr data
ibg.colorado.edu/cdrom2021/Day06-nivard/GenomicSEM_practical/
// Timestamps
0:00 Introduction
1:27 LDSC python environment set-up
5:09 Munge summary statistics
13:33 Genetic correlation
15:58 Comparison to paper
Tip Jar 💐
☕️ ko-f...
Просмотров: 151
Видео
Antithetic Variates + R Demo
Просмотров 234Месяц назад
How to use the antithetic variates method to reduce the variance of a Monte Carlo sample. Thanks for watching!! ❤️ Tip Jar 💐 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Unseen Species Problem
Просмотров 2,2 тыс.Месяц назад
A review of the Unseen Species Problem and how to estimate the number of unseen species using the Good Toulmin estimator. Thanks for watching!! ❤️ // Good Toulmin paper academic.oup.com/biomet/article-abstract/43/1-2/45/334874 // Fisher's paper www.math.mcgill.ca/dstephens/556-2008/Papers/Fisher1943.pdf // Shakespeare paper www.jstor.org/stable/2335721 Tip Jar 💐 ☕️ ko-fi.com/mathetal ♫ Eric Ski...
[Proof] Square matrix equals symmetric plus skew-symmetric matrices
Просмотров 1822 месяца назад
Linear algebra proof that any square matrix can be decomposed into a symmetric and skew-symmetric matrix. Thanks for watching!! ❤️ Tip Jar 💐 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Analysis of Covariance (ANCOVA) + R Demo
Просмотров 7 тыс.Год назад
Overview of analysis of covariance models (ANCOVA models) and a cricket example in R. Thanks for watching!! ❤️ // R code rpubs.com/mathetal/ancova // Chapters 0:00 Overview 3:38 Cricket dataset 6:25 R example Tip Jar 💐 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
[Proof] MSE = Variance + Bias²
Просмотров 9 тыс.Год назад
Proof that the mean squared error of an estimator is equal to the variance plus bias squared. Thanks for watching!! ❤️ Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Method of Moments Estimation | Example 2
Просмотров 8 тыс.Год назад
Finding the method of moments estimator for the Weibull distribution. Thanks for watching!! ❤️ Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Population Pyramid in R
Просмотров 1,4 тыс.Год назад
How to create a population pyramid (i.e., a butterfly chart) in R using Census data. Thanks for watching!! ❤️ // My Code rpubs.com/mathetal/poppyramid // Original R Tutorial klein.uk/teaching/viz/datavis-pyramids/ // Original Population Pyramid Code raw.githubusercontent.com/walkerke/teaching-with-datavis/master/pyramids/rcharts_pyramids.R Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi...
Mass and Center of Mass of a Lamina | Calculus 3
Просмотров 2,2 тыс.Год назад
How to find the mass and center of mass for a lamina with variable density. Thanks for watching!! ❤️ // Chapters // 0:00 Mass 5:22 Center of Mass 10:09 Outro Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Find P(X ≥ 0.3 | Y = 0.9) | Continuous RVs
Просмотров 1,5 тыс.Год назад
How to find a conditional probability given a joint PDF and two marginal PDFs from continuous random variables. Thanks for watching!! ❤️ Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Logistic Regression
Просмотров 1,3 тыс.Год назад
Basic overview of logistic regression plus an example of how to use logistic regression to predict a categorical outcome. Thanks for watching!! ❤️ //Chapters 0:00 Background 8:08 Example 12:17 Outro Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
Find a Coordinate Vector
Просмотров 26 тыс.Год назад
How to find the coordinate vector given a basis and a vector. Thanks for watching!! ❤️ Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/
How to Download Bioinformatics Data | scRNA-seq Example
Просмотров 1,2 тыс.Год назад
Tutorial on how to download scRNA-seq FASTQ files to a remote server. Thanks for watching!! ❤️ // Link to the de Jong paper www.nature.com/articles/s41590-021-00931-3 Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja/ #FASTQ
Convert to PDF, Survival Function, or Hazard Ratio [Survival Analysis]
Просмотров 2,8 тыс.2 года назад
An overview of how to convert from a PDF, survival function, or hazard ratio to a different form. Thanks for watching!! ❤️ Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja #SurvivalAnalysis
Dumbbell Plot in R
Просмотров 1,1 тыс.2 года назад
R tutorial on how to create dumbbell plots. Thanks for watching!! ❤️ // R code rpubs.com/mathetal/dumbbell Tip Jar 👉🏻👈🏻 ☕️ ko-fi.com/mathetal ♫ Eric Skiff - Chibi Ninja freemusicarchive.org/music/Eric_Skiff/Resistor_Anthems/eric_skiff_-_03_-_chibi_ninja
Probability Distribution of W = X + Y (Discrete Case)
Просмотров 3,5 тыс.2 года назад
Probability Distribution of W = X Y (Discrete Case)
Dot Density Map in R Using Census Data
Просмотров 2,2 тыс.2 года назад
Dot Density Map in R Using Census Data
(Don't Call Them) Joy Plots | History of Statistics
Просмотров 5632 года назад
(Don't Call Them) Joy Plots | History of Statistics
Find Unit Normal Vector at a Point | Calculus 3
Просмотров 4,7 тыс.2 года назад
Find Unit Normal Vector at a Point | Calculus 3
Find Angle Between Two Vectors | Calculus 3
Просмотров 9072 года назад
Find Angle Between Two Vectors | Calculus 3
Rise and Fall of the Iris Dataset | History of Statistics
Просмотров 9062 года назад
Rise and Fall of the Iris Dataset | History of Statistics
Plane Equation Perpendicular to Two Planes and Through a Point | Calculus 3
Просмотров 2,5 тыс.2 года назад
Plane Equation Perpendicular to Two Planes and Through a Point | Calculus 3
Convert to Standard Normal Distribution
Просмотров 7 тыс.2 года назад
Convert to Standard Normal Distribution
Naive Monte Carlo Integration + R Demo
Просмотров 2,1 тыс.2 года назад
Naive Monte Carlo Integration R Demo
Gene Signatures Plot | scRNA-Seq Analysis in Seurat
Просмотров 3,3 тыс.2 года назад
Gene Signatures Plot | scRNA-Seq Analysis in Seurat
I could not for the life of me figure this out through GPTs or my lecture which chose to skip this. Thank you so so much! Lifesaver!
Finally a tutorial that doesnt teach me like a 3rd grader
*reshape* and *plyr* in year 2024? You need to update your code dear lady!
why the proof is just looping itself like that? Why proof is so weird
what chapter contains this thing?
You're doing a great job, thank you.
You're the goat. thanks for the explanation!
EEEEZ well done
Good
Good job🎉just found your channel
legend man, i reckon that printer spooler thing was causing issues too for me i read something somewhere that mitm attack hides amongst them
u sound hot and delicious
at first i found the background sound annoying but then i realised its kinda sounds like the song in the game "buckshot roulette" so then i was just vibing
😭
i cant believe my eyes you are extremely helpful madame thank youuuu so muchhh
can box-muller be used to sample from normal distributions with different means and standard deviations?
why does theta equal 2pi U2?
Thank you mam❤
Wait hold on, how did he/they even arrive at this conclusion? Did Goode-Toulman empirically test this over and over with many different species? Because that counts as having empirically tested it if we were to look at the original paper. At least I hope that's how it was made up because it's such a bizarre way to figure our missing species count that I would not have expected to work
Seeing ur vids as a stats undergrad 😮😮😮😮 thank you
what is the app/site you use dor drawing :)❤
Microsoft OneNote
Where does X^n come from in the equation at 4:54, and how is it ever used? If it isn't used it might as well be an equation in terms of t alone.
I think it's very cool when math comes from biology!
is it not possible to rename the x-axis and y-axis? thanks for the video
It's so nice when a real problem has a concrete answer.
wow
isn't the coordinate vector the point the defines that vector and the coordinate matrix the scaling of the vectors in the non standard basis such that they get me to that coordinate vector?
Oh man, this video was...laminawesome! 👍
This was ANCOVAwesome! 👍
I recently came across a problem involving joint and marginal pdfs and while reading up on it I came across your channel. You've got a lot of nice videos, and I'm glad you're still adding to them!
Thank you 😊
This video was marginawesome! 👍
This was an amazing video! Also, thanks for the...support 😎
Thanks
Beautifully explain! no words
My final is later today, your content is still a life saver
A lesson is great
how do you not have to consider the pure water going in? does'nt it change the concentration?
Great video but your mic gave me an aneurism
Thanks mam
thanks😊
Many thanks to this post
"Its a very nice" -Borat
Your total number of singular values are 600 i think so. Can you please check?
First. Ah nice that you're back, and what a way to make a return with none other than deriving matrix estimators.
How does your pdf have values greater than 1?
thanks to you !
Shouldn't the Null Hypothesis be the other way around, i.e. Model is not a good fit? As rejecting H0 means success.
Thanks for the help ❤
Thank you so much! Your example really helps me understands The example I was reading from book null hypothesis is : honey cough does. It help cough. So I have one groups treated with honey and their outcome. One groups not treated with honey and their outcome 1. Since we assume honey cough does not work. We have 2* data because the treated group will have same outcome when they are untreated vice versa 2. I calculated the observed outcome. Which is just outcome* treated- outcome * untreated 3. Then form a table with the all assume sharp null hypothesis to form a table of outcome for all combinations 4. Find the number of combinations that have absolute outcome greater than observed 5. Pvalue= number in steps4= seeing effect as big as actual observed I guess I just really don’t get why people do fisher exact test because I understand the formula to get it but not why. If P value is small, just like the lady gets the correct combination. It means the effect of honey is not by chance, basically rejecting null hypothesis
the hum goes crazy
Great lesson I need something on data cleaning in R