Matthew E. Clapham
Matthew E. Clapham
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17 - Delta environments
Prodelta, delta front, delta plain facies and environments; river-, wave-, and tide-dominated deltas
Переглядів: 252

Відео

8 - Alluvial fans
Переглядів 3932 місяці тому
Alluvial fan environments, debris flow rheology and sediment support mechanisms
1 Fluvial type
Переглядів 5412 місяці тому
Characteristics of modern meandering and braided rivers (channel morphology, bar types, and associated deposits)
Regression with Count Data: Poisson and Negative Binomial
Переглядів 57 тис.3 роки тому
Poisson, quasi-Poisson, and negative binomial regression - when to do them and how you should choose the method. What are overdispersion and underdispersion, and why are they problems? How to deal with too many zero counts (zero-inflation) or when zero counts are impossible (zero-truncation). 0:00 Background 2:26 Poisson Regression: What and Why 7:05 Overdispersion: Quasi-Poisson or Negative Bi...
Linear regression
Переглядів 3,2 тис.3 роки тому
How ordinary least squares linear regression works and why to do it. Evaluating the assumptions of a regression model and interpreting the output in R.
Shapiro-Wilk test
Переглядів 25 тис.3 роки тому
The Shapiro-Wilk test to test for deviations from normality. Also includes an introduction to Q-Q plots, and how they can be used to graphically assess normality.
Linear mixed effects models
Переглядів 216 тис.4 роки тому
When to choose mixed-effects models, how to determine fixed effects vs. random effects, and nested vs. crossed sampling designs. Requirements and assumptions of mixed-effects models, and how to evaluate them. How mixed-effects models can improve parameter estimation with partial pooling/shrinkage.
Statistical power
Переглядів 4,6 тис.4 роки тому
The theory behind statistical power: what it is, what controls it, how you use it, and why you shouldn't calculate post-hoc power from your observed data.
Statistical testing procedures and the p value
Переглядів 2,4 тис.4 роки тому
The procedure for null-hypothesis statistical testing, including some of the philosophy behind the process. Definition and interpretation of the p value and statistical significance.
Time series and first differences
Переглядів 38 тис.5 років тому
Differencing data with first differences to perform regression and correlation with either stationary and non-stationary time series.
Nested ANOVA
Переглядів 23 тис.5 років тому
ANOVA with nested factors; fixed and random effects
Factorial ANOVA
Переглядів 11 тис.5 років тому
Factorial (two-way) analysis of variance; evaluating main effects and interactions; balanced vs. unbalanced designs and the use of type II/III sum-of-squares for unbalanced designs. Note: the R code examples starting at 12:40 are switched: the left example should be phosphate*material and the right example should be material*phosphate.
21 - Parasequences and sequence boundary
Переглядів 15 тис.6 років тому
Definition of a parasequence and its relationship to sequence cycles. Terminology used in seismic profiles, such as the transgressive surface and sequence boundary.
Generalized least squares regression
Переглядів 29 тис.6 років тому
GLS regression for time-series data, including diagnosis of autoregressive moving average (ARMA) models for the correlation structure of the residuals.
Partial and semipartial correlation
Переглядів 31 тис.6 років тому
The theory behind partial correlation and semipartial correlation, including the goals and assumptions of the test.
Multiple regression
Переглядів 2,5 тис.6 років тому
Multiple regression
6: The t test
Переглядів 4,4 тис.6 років тому
6: The t test
2: Data dispersion
Переглядів 4,2 тис.6 років тому
2: Data dispersion
30: Maximum likelihood estimation
Переглядів 122 тис.8 років тому
30: Maximum likelihood estimation
29: Non-Metric Multidimensional Scaling (NMDS)
Переглядів 84 тис.8 років тому
29: Non-Metric Multidimensional Scaling (NMDS)
28: Principal Component Analysis
Переглядів 52 тис.8 років тому
28: Principal Component Analysis
27: Resampling (two-sample tests)
Переглядів 16 тис.8 років тому
27: Resampling (two-sample tests)
26: Resampling methods (bootstrapping)
Переглядів 146 тис.8 років тому
26: Resampling methods (bootstrapping)
25: MANOVA
Переглядів 18 тис.8 років тому
25: MANOVA
24: Hotelling T2 test
Переглядів 31 тис.8 років тому
24: Hotelling T2 test
23: Mahalanobis distance
Переглядів 155 тис.8 років тому
23: Mahalanobis distance
22: Logistic regression
Переглядів 2,6 тис.8 років тому
22: Logistic regression
21: ANCOVA
Переглядів 23 тис.8 років тому
21: ANCOVA
19: Non-parametric correlation
Переглядів 6 тис.8 років тому
19: Non-parametric correlation
18: Pearson product-moment correlation
Переглядів 4,1 тис.8 років тому
18: Pearson product-moment correlation

КОМЕНТАРІ

  • @ericle8289
    @ericle8289 17 днів тому

    Excellent, had to search through several videos before landing on yours. A very clear and concise explanation on partial correlations.

  • @moonforces4447
    @moonforces4447 17 днів тому

    Thanks Matthew for ShareThis

  • @deepakjain4481
    @deepakjain4481 19 днів тому

    thanks a lot

  • @lintonfreund
    @lintonfreund 20 днів тому

    this video is incredible, thank you so much!

  • @maksimrodak7138
    @maksimrodak7138 25 днів тому

    this is really helpful. thank you so much!

  • @mirzetadjonlagic4497
    @mirzetadjonlagic4497 Місяць тому

    very good explanation!

  • @omarharbah6972
    @omarharbah6972 Місяць тому

    Thank you so much, an example on the last part "Working with time series" would be very useful.

  • @will74lsn
    @will74lsn Місяць тому

    can I find somewhere examples of random coefficient models where the variable of the random coefficient is not continuous but categorical? ideally written with STATA or SPSS?

  • @mitchellliddick5719
    @mitchellliddick5719 Місяць тому

    Can you please explain why time series are not allowed? This would make the residuals non-independent of one another, but why does this invalidate the test? Would a LMM work better in this case, and if so would “time” as the continuous independent variable be the random effect to account for resampling of the same system? Thank you!

  • @estefaniavillanueva1294
    @estefaniavillanueva1294 2 місяці тому

    OMG, thank you so much for this very informative video, it really helped me a lot!

  • @akontia6
    @akontia6 2 місяці тому

    Super simplified, very help. Thank you!

  • @a.s.3874
    @a.s.3874 2 місяці тому

    Are LMM and LMEM the same thing?

  • @yee6365
    @yee6365 3 місяці тому

    Where does the observed difference at ~6:00 come from?

  • @langleymcentyre2754
    @langleymcentyre2754 3 місяці тому

    Thank you for making this video it really clarified the concepts for me

  • @dom6002
    @dom6002 3 місяці тому

    It's remarkable how inept professors are at explaining the simplest of concepts. You have surpassed most of mine, thank you very much.

    • @yee6365
      @yee6365 3 місяці тому

      Well this is an applied statistics course, so it's way more useful than most theoretical ones

  • @tinAbraham_Indy
    @tinAbraham_Indy 4 місяці тому

    I truly enjoy watching this tutorial. Thank you

  • @HashanDananjaya
    @HashanDananjaya 4 місяці тому

    Thank you very much! This helped me quite a lot!!

  • @user-gq1iu8bc1y
    @user-gq1iu8bc1y 6 місяців тому

    Is that Dr. Bob D pointing at the outcrop.

    • @MatthewEClapham
      @MatthewEClapham 5 місяців тому

      Indeed - an old photo I scanned from one of the New York fall field trips!

  • @TheGeek275
    @TheGeek275 6 місяців тому

    Thank you sir, it was very well explained.

  • @user-mh7px2uy1k
    @user-mh7px2uy1k 6 місяців тому

    Excellent work

  • @Breizh1999
    @Breizh1999 6 місяців тому

    6:45

  • @paulbriggs3072
    @paulbriggs3072 8 місяців тому

    You state "Dune size scales with flow depth; ripples scale with grain size instead". There are what are known as mega-flood ripples (such as the Camas Prairie ripples). These are over 30 feet high. Were they scaled up as a result of grain particle size? Or flow depth? Surely they scaled up in size due to flow depth.

  • @fiore1394
    @fiore1394 8 місяців тому

    Oh my goodness, thankyou for making a video that actually explains statistical content clearly! If I had a dollar for every video with a title like, "such and such analysis method, CLEARLY EXPLAINED!" then goes on to dive into the most complex content imaginable without proper explanation I'd be a very rich man. Sorry about this vent, I'm just very appreciative. Keep up the good work.

  • @samg2784
    @samg2784 8 місяців тому

    at 3:18, shouldn't it be Yt and Yt-1 rather than x?

  • @XarOOraX
    @XarOOraX 8 місяців тому

    This story seems straight forward - yet, after 8 minutes I still am clueless as where it is going to lead. Maybe it is just me, but when I need to learn something, I don't want a long tension arc: Oh, what is going to happen next... I want to start with a great picture of what is going to happen, and then fill in the details one after another, so I can sit and marvel, how the big initial problem step by step dissolves into smaller and understandable pieces. Inversing the story, starting from the conclusion, going to the basics also allows to stop once you understood enough.

  • @wendyfrancesconi9808
    @wendyfrancesconi9808 10 місяців тому

    Really clear. Thanks!

  • @multitaskprueba1
    @multitaskprueba1 11 місяців тому

    Fantastic video! Thank you so much! You are the best!

  • @shivangitomar5557
    @shivangitomar5557 11 місяців тому

    best!

  • @juliocardenas4485
    @juliocardenas4485 11 місяців тому

    Excellent. Thank you

  • @user-dj4jj9us8h
    @user-dj4jj9us8h Рік тому

    very helpful, thank you!

  • @vishaljain4915
    @vishaljain4915 Рік тому

    Could not have gotten confused even if i tried to, really clear explanation

  • @mind2539
    @mind2539 Рік тому

    Amazing explanation!

  • @Nobody-md5kt
    @Nobody-md5kt Рік тому

    This is fantastic. I'm a software engineer currently learning about why our cosine similarity functions aren't doing so hot on our large embeddings vector for a large language model. This helps me understand what's happening behind the scenes much better. Thank you!

  • @mallorythomas725
    @mallorythomas725 Рік тому

    Really good explanation! Helping me write my first manuscript :)

  • @stevengpeacock1
    @stevengpeacock1 Рік тому

    Great summary, thanks Matthew

  • @BrOgam3rHD
    @BrOgam3rHD Рік тому

    Holy fuck is this video good

  • @statnotes6339
    @statnotes6339 Рік тому

    How to calculate the p value(probability of the distance) in R manually? I don't want to use the function ks.test

  • @pedroewert143
    @pedroewert143 Рік тому

    Really great - i like the nod to regressions. Our Professor was not very good at explaining that the name Anova is somewhat vague or more a Header-name for different tools. And i got confused when everything was called Anova yet the approaches were somewhat different

  • @jc_777
    @jc_777 Рік тому

    Concise and right to the point. I love it. Thanks.

  • @chacmool2581
    @chacmool2581 Рік тому

    Country X has 30 states with repeated observation measures of X across 15 years for each state. Is Mixed Effects appropriate to model Y from X with states as random effects?

  • @skylerstrange6537
    @skylerstrange6537 Рік тому

    Legend

  • @paulinaramirezwulff2736
    @paulinaramirezwulff2736 Рік тому

    are you sure it is not possible to do the Hotelling T2 Test in within-desgings? My professor told me to do the test, even though the same group of people did multiple tests on 2 different days.

  • @abifischer7657
    @abifischer7657 Рік тому

    Hi Matthew, what sources did you use in this video? specifically what sources did you use to distinguish the difference between a ripple and dune?

  • @zheyuanpei5543
    @zheyuanpei5543 Рік тому

    I am new to this model and I have to say that this video is really helpful! Thanks!

  • @stevenash2869
    @stevenash2869 Рік тому

    The bext explanation I've found, thank you!