zedstatistics
zedstatistics
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MATHS IN REAL LIFE: A Fruit Juice Company
0:00 Intro
1:40 The Story of Allie's Juice
4:29 Maths in Microsoft Excel
5:25 Maths in Juice Production
7:50 Maths in Keeping Profitable
9:30 Maths in Business Stuff!
11:10 Plans for the Future
14:00 PROBLEM QUESTION
See all my videos at www.zstatistics.com/videos/
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Відео

MATHS IN REAL LIFE: Nursing
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See all my videos at www.zstatistics.com/videos 0:00 Intro 2:08 Why Nursing? 4:15 What is Drug and Alcohol Nursing? 6:50 Maths in calculating medication 9:25 Maths in dealing with drug tolerance 11:50 Maths in research 14:45 Involvement in the Nursing union
Channel Update !!!
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See all my videos at www.zstatistics.com/videos/
Learn Statistical Regression in 40 mins! My best video ever. Legit.
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See all my videos at: www.zstatistics.com/videos 0:00 Introduction 2:46 Objectives of regression 4:43 Population regression equation 9:34 Sample regression line 18:51 SSR/SSE/SST 26:25 R-squared 29:00 Degrees of freedom and adjusted R-squared
"Mutually Exclusive" and "Independent" Events (...are VERY different things!)
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See all my videos at www.zstatistics.com/ SuperTHANKS donations go towards: The Right to Learn Foundation: www.right2learnfoundation.org/
Hazard and Survival Functions - [Survival Analysis 5/8]
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See all my videos at www.zstatistics.com/ Any donations via the Super Thanks button going to the Right To Learn Foundation: www.right2learnfoundation.org/about-us/ Survival analysis playlist here: ua-cam.com/play/PLTNMv857s9WUclZLm6OFUW3QcXgRa97jx.html 0:00 Introduction 1:53 Cumulative Distribution Function 3:06 Probability Density Function 4:19 Survival Function 5:16 Hazard Function 7:23 Inter...
Kaplan-Meier Curves and Log-rank Test - [Survival Analysis 4/8]
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See all my videos at www.zstatistics.com/videos/ 0:00 Introduction 1:56 History and Intuition 3:57 Calculation 14:12 Confidence Intervals 22:32 Logrank Test 29:51 Example KM Estimation using R Survival Analysis Playlist here: ua-cam.com/play/PLTNMv857s9WUclZLm6OFUW3QcXgRa97jx.html Great video on Taylor Series: ua-cam.com/video/3d6DsjIBzJ4/v-deo.html
Life Tables - [Survival Analysis 3/8]
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See all my videos at www.zstatistics.com/videos/ Survival Analysis Playlist: ua-cam.com/video/v1QqpG0rR1k/v-deo.html 0:00 Intro 1:21 Definition and Intuition 7:55 Calculating the Survival Function 13:58 Calculating Life Expectancy 18:20 Disability-Free Life Expectancy (Sullivan, 1971)
Relative Risk vs Odds Ratio! EXTENSIVE VIDEO!
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See all my videos at www.zstatistics.com/videos/ Health Stats IQ playlist: ua-cam.com/play/PLTNMv857s9WUI5YsQMW14trmbopjZMWPa.html 0:00 Introduction 0:30 Context 3:13 Calculation of RR and OR 7:40 Case control studies (Why do we need Odds Ratios?) 14:03 Equivalence between RR and OR 17:37 Examples from research REFERENCES USED Curhan, S. G., Willett, W. C., Grodstein, F., & Curhan, G. C. (2019)...
Censoring and Truncation + LOADS OF EXAMPLES - [Survival Analysis 2/8]
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See all my videos at www.zstatistics.com/videos 0:00 Intro | 0:37 CENSORING | 2:46 Example - Right censoring | 5:18 Example - Left censoring | 6:55 Example - Interval censoring | 8:25 TRUNCATION | 10:07 Example- Left truncation | 11:35 Example - Right truncation | Survival Analysis Playlist ua-cam.com/play/PLTNMv857s9WUclZLm6OFUW3QcXgRa97jx.html RESEARCH REFERENCED Gilbert, S. L., Lindberg, M. ...
What are p-values?? Seriously.
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See all my videos at www.zstatistics.com/videos 0:00 Intro 2:00 Coin example 8:52 History of p-values 13:06 One-tailed vs two-tailed p-values 20:02 Example of p-values in journal articles Research article: Si, Y., Xiao, X., Xia, C., Guo, J., Hao, Q., Mo, Q., ... & Sun, H. (2020). Optimising epilepsy management with a smartphone application: a randomised controlled trial. Medical Journal of Aust...
Introduction to Survival Analysis [1/8]
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See all my videos at www.zstatistics.com/videos 0:00 Series Introduction 1:26 Survival Analysis Intuition 4:40 Measuring survival time 7:25 Visualising survival rates 9:24 Applications of survival analysis Analysis of soccer player substitutions in the Spanish soccer league: journals.sagepub.com/doi/abs/10.1177/1527002507308309
HYPOTHESIS TESTING BASICS: Type 1/Type 2 errors | Statistical power
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See all my videos at www.zstatistics.com/ See the whole Hypothesis Testing playlist here: ua-cam.com/play/PLTNMv857s9WXg9tRi7wHU9cMgL1x140dO.html
What are confidence intervals? Actually.
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See all my videos at www.zstatistics.com/ 1:01 Intuition 4:46 How are they calculated 14:28 Confidence interval examples 18:50 Frequentist vs Bayesian ERRATA: The confidence interval created for the population proportion at 13:51 should be 0.03 to 0.21. HEALTH STATS IQ PLAYLIST ua-cam.com/play/PLTNMv857s9WUI5YsQMW14trmbopjZMWPa.html T-DISTRIBUTION VIDEO ua-cam.com/video/UetYS3PaHIo/v-deo.html B...
What is COVARIANCE? What is CORRELATION? Detailed video!
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0:00 Introduction | 1:09 Definition | 2:48 Covariance and Correlation from a sample | 9:55 Covariance and Correlation from a probability distribution (using EXCEL) | 18:47 Why do we divide by n-1 for a sample? Descriptive Statistics playlist here: ua-cam.com/video/bfQLNyiDPsk/v-deo.html See all my videos here: www.zstatistics.com/videos Degrees of freedom video here: ua-cam.com/video/N20rl2llHn...
What is STANDARDIZED data?? (Direct and Indirect Standardization)
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What is STANDARDIZED data?? (Direct and Indirect Standardization)
What's a Log Scale?? Pandemic Plots Explained!
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What's a Log Scale?? Pandemic Plots Explained!
What does statistical CONFOUNDING mean?? GREAT VIDEO!
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What does statistical CONFOUNDING mean?? GREAT VIDEO!
Probability Distribution Functions (PMF, PDF, CDF)
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Probability Distribution Functions (PMF, PDF, CDF)
Chi-squared Test for Independence! Extensive video!
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Chi-squared Test for Independence! Extensive video!
Chi-squared Goodness of Fit Test! Extensive video!
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Chi-squared Goodness of Fit Test! Extensive video!
What is the Chi-Squared distribution? Extensive video!
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What is the Chi-Squared distribution? Extensive video!
Exponential Distribution! AWESOME EXPLANATION. Why is it called "Exponential"?
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Exponential Distribution! AWESOME EXPLANATION. Why is it called "Exponential"?
Range | Interquartile Range (IQR) | Box and whisker plot
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Range | Interquartile Range (IQR) | Box and whisker plot
What is the t-distribution? An extensive guide!
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What is the t-distribution? An extensive guide!
What are "moments" in statistics? An intuitive video!
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What are "moments" in statistics? An intuitive video!
What is autocorrelation? Extensive video!
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What is autocorrelation? Extensive video!
What is Kurtosis? (+ the "peakedness" controversy!)
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What is Kurtosis? ( the "peakedness" controversy!)
What is skewness? A detailed explanation (with moments!)
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What is skewness? A detailed explanation (with moments!)
What are Quartiles? Percentiles? Deciles?
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What are Quartiles? Percentiles? Deciles?

КОМЕНТАРІ

  • @h.d3496
    @h.d3496 17 годин тому

    absolute lifesaver 🙏

  • @brazhell
    @brazhell 23 години тому

    Excellent work! This is a proper lecture about this issue. But I can't download the spreadsheet, is it not available now? It would be priceless. Otherwise I have to make my own.

  • @alinuh5564
    @alinuh5564 23 години тому

    Hi Have you done anything about latent class analysis and cluster analysis Many thanks your intuitive teaching is amazing!

  • @ishwarichavan5431
    @ishwarichavan5431 День тому

    Wow, this was great explanation. Thanks Justin!

  • @shohan5772
    @shohan5772 День тому

    you explained it a lot easier and probably my course teacher did too but i need to watch it 3 more times.

  • @Genedide
    @Genedide День тому

    Please do go into the excruciating derivations of second & third moments- both sample and population! In the SAMPLE third moment for example, it makes sense algebraically that (n-1)(n-2) factors out, but since when is n-2 make sense with regards to degrees of freedom? So on with the 4th moment?

  • @vinodgurjar8686
    @vinodgurjar8686 2 дні тому

    its so nicely explained that i wanna explain it to someone else now

  • @cicada7030
    @cicada7030 2 дні тому

    THANK YOU SO MUCH

  • @laurentkloeble5872
    @laurentkloeble5872 3 дні тому

    at last I understand !!! thank you so much !!!

  • @Njaksn
    @Njaksn 4 дні тому

    Medical student, studied the whole course, but feels like know nothing, exam in one and a half hour 😂😢

  • @BasuthkarKiran
    @BasuthkarKiran 4 дні тому

    Thanks for the wonderful explanation. Just one confusion in the section "Visualisation (PDF and CDF)" - the Exponential distribution graph at @6:35 minutes is correct? because on the Y-axis you have put values greater than 1. but shouldn't these values be less than 1 representing the probability?

  • @mgd891
    @mgd891 4 дні тому

    i love you and thank you

  • @kandiahchandrakumaran8521
    @kandiahchandrakumaran8521 5 днів тому

    Excellent. Thank you.

  • @lesliewubbel9157
    @lesliewubbel9157 5 днів тому

    This the only video I found that explains this concept clearly and correctly!

  • @arjunadhikari9404
    @arjunadhikari9404 5 днів тому

    Exceptionally explanatory and illustrative! Thank you so much for your excellent video!

  • @noumanullah7019
    @noumanullah7019 6 днів тому

    excellent

  • @NishantDixit-gs1yu
    @NishantDixit-gs1yu 6 днів тому

    This class is very useful and deeply knowledge full for me . thanks a lot

  • @walterreuther1779
    @walterreuther1779 6 днів тому

    Negative skew looks like a hockeystick: Income, CO2, average temperature over time (these are not the typical subject of statistics I suppose) Another example could be all things associated with old age on the Y axis and old age on the X axis. (E.g. hearing loss vs. age, number of close people died vs. age etc.)

  • @Preshan1223
    @Preshan1223 7 днів тому

    thank you so much for this

  • @abishekkevinpandian4224
    @abishekkevinpandian4224 7 днів тому

    Loved it. Been trying to undertsand this concept for sometime now...

  • @kenniechege
    @kenniechege 7 днів тому

    I have not watched it yet. But the comments are overwhelmingly supportive to my desire to do better in maths despite my job and age.

  • @collinskipyegon7956
    @collinskipyegon7956 7 днів тому

    What about using Delta method in obtaining variance of S(t)?

  • @khalidebrahim3104
    @khalidebrahim3104 7 днів тому

    You are amazing. Thank you for the vedio!

  • @JuliusAu-ff4ip
    @JuliusAu-ff4ip 7 днів тому

    super clear explanation. Thank you !

  • @ayshaazami5431
    @ayshaazami5431 8 днів тому

    That did not feel like 40 mins, thank you!

  • @k_Olimov
    @k_Olimov 8 днів тому

    My final is tomorrow

  • @simonbates8795
    @simonbates8795 8 днів тому

    Not sure if you read comments on old videos. looking for advice please. I know nothing about maths or excel until a year or so ago (I am 70 now). I have been using Poisson to predict an event. Imagine a coin. Head, Tails and it can land on its edge. But each time the weight of the coin is heavier on the head side, or tail side or even the edge. Those variables are always known. What is the best type of probability distribution I should be using to predict head,tail or edge. I have watched your video series and now just think that Poisson is not the best fit. Any help would be appreciated. Thank you

  • @Rizz1980
    @Rizz1980 8 днів тому

    Hey, how do the statisticians calculate the population mean when they collect samples and study them just because they can't deal with the whole population??

  • @levjorda
    @levjorda 9 днів тому

    thank you !

  • @pesc75
    @pesc75 9 днів тому

    I'm working with a criterion reference evaluation. Most of our data for a sample or a population should be a negative skew distribution since we target a mastery result at more than 85% or so since it's criterion based evaluation. Am I correct?

  • @anubisgod23
    @anubisgod23 9 днів тому

    Sporting statistics

  • @anubisgod23
    @anubisgod23 9 днів тому

    So it measures consistency

  • @sathish297
    @sathish297 9 днів тому

    much much better than any gpt. looking forward to seeing more videos

  • @pauldanam9591
    @pauldanam9591 9 днів тому

    You cool, JZ!

  • @escobol
    @escobol 10 днів тому

    this video was really helpful thank you!

  • @shivgaur3865
    @shivgaur3865 10 днів тому

    Thank you so much for explaining the concept so well!

  • @Engineer78206
    @Engineer78206 10 днів тому

    great video

  • @Engineer78206
    @Engineer78206 10 днів тому

    thank you sir , lots of love from India.

  • @Engineer78206
    @Engineer78206 10 днів тому

    nice video, thank you sir

  • @whiteinferno7942
    @whiteinferno7942 12 днів тому

    amazing stuff mate , you are a legend!

  • @louisabeouboeuf7374
    @louisabeouboeuf7374 12 днів тому

    Love the break down. Thanks. Took SAT years ago.

  • @rahav811
    @rahav811 13 днів тому

    Hey there! Thanks a bunch for your help!

  • @umber_wall
    @umber_wall 13 днів тому

    Hey, thank you!

  • @GRENarrator
    @GRENarrator 13 днів тому

    Anyone else watching this an hour befor their statistics exam?

  • @Malyca_R
    @Malyca_R 13 днів тому

    I am a medical student who wanted to get the hang of this, for my research projects and I can safely say with a p value of 0.05 that I clearly understood these wild concepts.Thanks to my guy!^^

  • @evanmusari4250
    @evanmusari4250 14 днів тому

    Best

  • @javier2luna
    @javier2luna 15 днів тому

    Por alguna extraña razón las mujeres le dan más valor a lo que escuchan que a lo que esta escrito. Y valgan verdades, la sociedad es femenina por definición Por alguna extraña razón la gente le da más valor a las promesas electorales de aquel que se autoproclama defensor de tus derechos y te pide el voto a cambio de mejorarte la vida. Sin embargo, luego de unos años, las únicas vidas que han mejorado son las vidas de aquellos que se habían autoproclamado. Si la política consiste en engañar a la gente y a cuanta más personas engañes mejor. Pregunto, ¿tu te sientes parte del problema o de la solución? - IMV P2rtido Polític0 en WordPr3ss -- El primer partido político con funcionamiento interno verdaderamente democrático en la historia de España. -- Sin machitos alfa, sin capataces a lomo de caballo blanco, sin tonto pollas, sin chulo playas, sin cuadros, sin mi3rdas

  • @abasedyetbased7632
    @abasedyetbased7632 15 днів тому

    Bro has great taste in music

  • @Engineer78206
    @Engineer78206 16 днів тому

    thank you sir for this explanation.

  • @aryanshah3354
    @aryanshah3354 16 днів тому

    is probability distribution function different from the probability density function