Statistics Guides with Prof Paul Christiansen
Statistics Guides with Prof Paul Christiansen
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R tutorial: Sample size calculations for linear regression models
This video will show you how you can calculate the sample size for a linear regression model using the pwr package in R. The code can be drive.google.com/drive/folders/1w8WsiloZfQrXONRlcm1f_ZRifs2I6tqz?usp=sharingfound here
Переглядів: 67

Відео

R tutorial: Creating a word cloud
Переглядів 7221 день тому
In this video I show you how to read in text data, clean it and create a simple word cloud in R using the wordcloud package text file and code can be found here
R Tutorial: Sample size calculations for t-tests
Переглядів 5228 днів тому
This video shows you how to calculate the required sample size for an independent samples, paired samples and one sample t test. The code can be found here drive.google.com/drive/folders/1CDP_4zPooTxjn5l4waI3jlxOSgxDZcs6?usp=sharing
Talking all things reproducibility - an interview with Dr Charlotte Pennington
Переглядів 1733 місяці тому
To purchase Charlotte's book see: www.amazon.co.uk/Students-Guide-Open-Science/dp/0335251161 www.mheducation.co.uk/a-student-s-guide-to-open-science-using-the-replication-crisis-to-reform-psychology-9780335251162-emea-group One thing we did not discuss is the Open Science Collaboration (2015) study that showed there is a crisis! See www.science.org/doi/10.1126/science.aac4716
R tutorial: Exporting an R plot so it can be edited in power point
Переглядів 3553 місяці тому
This video shows you how you can make an R plot (made in ggplot) fully editable in PowerPoint, so you can change colours and labels etc. This is ideal for accessibility in presentations and posters. Code used can be found here drive.google.com/file/d/16PoT2u9B2TqS9fpvzrJir1aVRPyH8HK9/view?usp=sharing
R tutorial: Renaming string data
Переглядів 1406 місяців тому
In this video, I show you how you can rename string data to make the content of data sets clearer. I also show you how you can combine string categories. Data and code for the video is here: drive.google.com/drive/folders/1We6TTlWqQyXGarvxB6qR0tvubaJ5oBlM?usp=sharing
R Tutorial: Removing duplicates from a data set
Переглядів 3756 місяців тому
This video shows you a quick and easy way to remove duplicates from a data set using Rstats. Data and code used can be found here drive.google.com/drive/folders/1Lqzn8Au_gPktd9hx_T0QMG7ljpVd1w4W?usp=sharing
R tutorial: Switching long format data to wide format, and wide format to long format
Переглядів 9969 місяців тому
In this video I demonstrate how you can make wide format data long form and vice versa. I do this using the pivot functions in the tidyverse package. I'll also show you how you can add prefixes to column titles Data and code can be found here: drive.google.com/drive/folders/1mqguHWgpXUmW5tR8X81TaTh-y6Df6kOS?usp=sharing
R tutorial: Paired samples t test
Переглядів 50111 місяців тому
In this video I show you how to do a paired samples t-test and produce an effect size. I cover how to do it for both long and wide-form data. Data and code can be found here drive.google.com/drive/folders/1e7w-sHuA-lyJmtgN_-yxSgpHNt7RSf8K?usp=sharing
R Tutorial: Wilcoxon paired samples test
Переглядів 17711 місяців тому
This video shows you how to produce a Wilcoxon paired samples test in R and how to produce and effect size for it. Data and code can be found here drive.google.com/drive/folders/1rKnznHtRWupQ1Jsljq1-J836lqnf00Vh?usp=sharing
R Tutorial: Mann-Whitney test
Переглядів 36011 місяців тому
This video will show you how to do a Mann-Whitney U test and get an effect size for it, data and code can be found here: drive.google.com/drive/folders/1RdASqpwyHzfuzI7wXC-1qg0-QciwJvTC?usp=sharing
R Tutorial: Independent samples t-test
Переглядів 25811 місяців тому
This video shows you how to run an independent samples t-test, Welch test, and how to produce a Cohen's d effect size. Data and code can be found here drive.google.com/drive/folders/1sPGHuKwnDUcC6LpMAutR8u-gIVJuin-R?usp=sharing
R Tutorial: Merging data sets in R
Переглядів 2,2 тис.Рік тому
This video shows you how you can merge data sets in R, includes what to do when there is a mismatch in the data sets, and how to merge by more than one column. Data and code can be found here drive.google.com/drive/folders/16ByIsQyj7Pqh0B9w1aD68TENMM5J5vbO?usp=sharing
R Tutorial: Labelling factors (and renaming string variables)
Переглядів 455Рік тому
This video shows you how to label factors in R and how to relabel string variables that have a spelling mistake (or suchlike) in them. It also covers some troubleshooting of a very common error that wipes your data! Data and code be found here drive.google.com/drive/folders/1pqz1fJvjvQVPpUVzTS6xLl-wFb1tWoIU?usp=sharing
R Tutorial: Boxpots with ggplot
Переглядів 84Рік тому
This video shows you how to produce and edit boxplots in ggplot. data and code can be found here drive.google.com/drive/folders/1lStb85OsS_rjm1H0AlWctRC_f27tW2v9?usp=sharing (use the "Boxplots ggplot" code)
R Tutorial: Producing, and combining, histograms and density plots in R
Переглядів 333Рік тому
R Tutorial: Producing, and combining, histograms and density plots in R
R Tutorial: Boxplots using base R
Переглядів 268Рік тому
R Tutorial: Boxplots using base R
R Tutorial: Friedman test
Переглядів 1,9 тис.Рік тому
R Tutorial: Friedman test
R Tutorial: Kruskal Wallis test
Переглядів 2,8 тис.Рік тому
R Tutorial: Kruskal Wallis test
R tutorial: Descriptive statistics (and more) using skimr
Переглядів 1,2 тис.Рік тому
R tutorial: Descriptive statistics (and more) using skimr
AMOS user interface guide
Переглядів 462Рік тому
AMOS user interface guide
R Tutorial: Exporting outputs from Lavaan
Переглядів 947Рік тому
R Tutorial: Exporting outputs from Lavaan
R Tutorial: Identifying duplicates in a data set
Переглядів 7 тис.2 роки тому
R Tutorial: Identifying duplicates in a data set
R tutorial: Automatically delete rows and columns of missing data
Переглядів 3,3 тис.2 роки тому
R tutorial: Automatically delete rows and columns of missing data
R tutorial: Automatically clean column names
Переглядів 2,7 тис.2 роки тому
R tutorial: Automatically clean column names
R tutorial: Converting imperial to metric
Переглядів 1,2 тис.2 роки тому
R tutorial: Converting imperial to metric
R Tutorial- Dealing with missing data
Переглядів 1,5 тис.2 роки тому
R Tutorial- Dealing with missing data
R Tutorial - Internal reliability using Cronbach’s Alpha and McDonald’s Omega
Переглядів 5 тис.2 роки тому
R Tutorial - Internal reliability using Cronbach’s Alpha and McDonald’s Omega
R Tutorial: Creating Street maps (part 1)
Переглядів 2,4 тис.2 роки тому
R Tutorial: Creating Street maps (part 1)
R tutorial: Ordinal regression
Переглядів 22 тис.2 роки тому
R tutorial: Ordinal regression

КОМЕНТАРІ

  • @maicongamaoliveira9446
    @maicongamaoliveira9446 10 годин тому

    Professor, if I am using a GLM where there is no R-squared to calculate the f-squared, can I use a pseudo R²? A D-squared? Or is there another method for GLM?

  • @raaniarafi2604
    @raaniarafi2604 19 днів тому

    Can u please share that data file I wanna use it as a example of my seminar

  • @Snowypine9
    @Snowypine9 22 дні тому

    This was incredibly helpful! Thanks so much. I feel more comfortable with HLR now than after an entire course on R lol

  • @turkishdisco2
    @turkishdisco2 26 днів тому

    Great tutorial, thanks! It'd be good to know more about how to select a rotation method - you say that this depends on the nature and size of your data, but can you give any more info?

  • @psllive6821
    @psllive6821 Місяць тому

    It shows error In map1 <-ggplot(mapdata1, aes(x=long, y=lat, group=group)) + geom_polygon(aes(fill=Perc_vaccinated)),clor="black"

  • @jusseldussel8
    @jusseldussel8 Місяць тому

    very good video!

  • @moonlightwolf
    @moonlightwolf Місяць тому

    Thank you so much! I had no idea this was even possible!

  • @darianpaul2891
    @darianpaul2891 Місяць тому

    Thanks for this tutorial! super useful for making presentations and posters.

  • @baridomakemsi557
    @baridomakemsi557 Місяць тому

    Thanks for this and the first video. I understand that your data was a repeated measurements, which demands that you use random effect instead if fixed effect. Why then did you refer to "fixed effect" when you added the predictors?

  • @japhethmawia3502
    @japhethmawia3502 Місяць тому

    Is there a link to access the data frame you used. It could be so nice helping me practice alongside.

  • @lisaasaliontin110
    @lisaasaliontin110 Місяць тому

    Thank uu so much

  • @danielshepherd8752
    @danielshepherd8752 Місяць тому

    Really helpful :-)

  • @thomasharrison5933
    @thomasharrison5933 2 місяці тому

    Does this analysis perform data estimation or casewise deletion?

  • @yolanda-xu2926
    @yolanda-xu2926 2 місяці тому

    Thank you!!!!! Saved me from LOADS of work

  • @saneshkp9810
    @saneshkp9810 2 місяці тому

    i have adoubt 1) the covariance between error terms in measurement model need to be maintained in sem analysis?

  • @BrookeHerbert-d8j
    @BrookeHerbert-d8j 2 місяці тому

    Mara Cliffs

  • @MadgeRenata-y3i
    @MadgeRenata-y3i 2 місяці тому

    Lizeth Squares

  • @sofiababcock5669
    @sofiababcock5669 2 місяці тому

    Heaney Flat

  • @MaymeJurgensmeier-e6w
    @MaymeJurgensmeier-e6w 2 місяці тому

    Smitham Garden

  • @DickGordon-r3b
    @DickGordon-r3b 2 місяці тому

    Silas Islands

  • @nurikalter-h3o
    @nurikalter-h3o 2 місяці тому

    Queenie Prairie

  • @LadaleWickings-p6r
    @LadaleWickings-p6r 2 місяці тому

    Hamill Mountains

  • @HearstTab-f1p
    @HearstTab-f1p 2 місяці тому

    Little Ranch

  • @JoaquinVincent-f1i
    @JoaquinVincent-f1i 2 місяці тому

    Kautzer Loaf

  • @ToriBerry-u6p
    @ToriBerry-u6p 2 місяці тому

    Pacocha Mission

  • @KatherynMcGuire-g5l
    @KatherynMcGuire-g5l 2 місяці тому

    D'angelo Glen

  • @MaijaKarppinen-u2s
    @MaijaKarppinen-u2s 2 місяці тому

    O'Hara Parkways

  • @HuntingtonNick-y6v
    @HuntingtonNick-y6v 2 місяці тому

    Bergstrom Run

  • @HubbardTom-e5k
    @HubbardTom-e5k 2 місяці тому

    America Cliff

  • @CarterArcher-c8t
    @CarterArcher-c8t 2 місяці тому

    Gretchen Brook

  • @CletusBerntsen-y4p
    @CletusBerntsen-y4p 2 місяці тому

    Bernadine Way

  • @ColinBringman-t9n
    @ColinBringman-t9n 2 місяці тому

    Emard Crest

  • @TobyAldridge-h3m
    @TobyAldridge-h3m 2 місяці тому

    Kozey Causeway

  • @DaltonBarnard-v7s
    @DaltonBarnard-v7s 2 місяці тому

    Wilfrid Wall

  • @SethSprouse-w7t
    @SethSprouse-w7t 2 місяці тому

    Jacobi Union

  • @FilibertoLary-w7w
    @FilibertoLary-w7w 2 місяці тому

    Ankunding Inlet

  • @gavinaustin4474
    @gavinaustin4474 2 місяці тому

    Thanks Paul. Just want to confirm something re the random-intercept term. The point of adding this term is to soak up the between-subject variance. In other words, if we didn’t add this term, the model would still run, but the p-value would be much larger. The addition of the random-intercept term is not related to the fact that each participant is measured multiple times (in violation of the assumption of independence of observations). I’m asking because I think you said both of the above: we add the random-intercept term (1) to account for the fact that the participants will differ from each other in their responses to the predictor variable, and/or (2) because each participant is measured multiple times.

  • @ClarissaMarsh-l2b
    @ClarissaMarsh-l2b 2 місяці тому

    Ryleigh Ferry

  • @SimonNick-q7t
    @SimonNick-q7t 2 місяці тому

    Devan Ville

  • @DevendraSejour-w9q
    @DevendraSejour-w9q 2 місяці тому

    Kuvalis Heights

  • @JeffersonHoney-q8x
    @JeffersonHoney-q8x 3 місяці тому

    Darrell Radial

  • @biancamangion7750
    @biancamangion7750 3 місяці тому

    Thank you very much, Prof Paul. Your video has helped me immensely.

  • @SimonAdolph-d6b
    @SimonAdolph-d6b 3 місяці тому

    Juana Courts

  • @BrewsterDuncan-o5k
    @BrewsterDuncan-o5k 3 місяці тому

    Jenkins Square

  • @BabbittIrene-l3h
    @BabbittIrene-l3h 3 місяці тому

    Charley Squares

  • @BryantMcKnight-o8g
    @BryantMcKnight-o8g 3 місяці тому

    Herman Mount

  • @EvaBert-h6o
    @EvaBert-h6o 3 місяці тому

    Romaine Way

  • @KimberlyHall-c5d
    @KimberlyHall-c5d 3 місяці тому

    Lilly Points

  • @HopeNicholas-d8p
    @HopeNicholas-d8p 3 місяці тому

    Burley Squares

  • @JordanAda-l8k
    @JordanAda-l8k 3 місяці тому

    Ankunding Cove