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Statistics Guides with Prof Paul Christiansen
United Kingdom
Приєднався 24 жов 2018
This channel contains videos that show you how to analyse data in R, SPSS, and JASP as well as how to write it up in a clear and concise manner.
For updates and other resources (and terrible stats jokes) follow my twitter @ChristiansenLiv
Dr Paul Christiansen (Senior Lecturer, University of Liverpool)
For updates and other resources (and terrible stats jokes) follow my twitter @ChristiansenLiv
Dr Paul Christiansen (Senior Lecturer, University of Liverpool)
Talking all things reproducibility - an interview with Dr Charlotte Pennington
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
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
Переглядів: 164
Відео
R tutorial: Exporting an R plot so it can be edited in power point
Переглядів 2642 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 1185 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 3165 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 8958 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 45110 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 16410 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 30710 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 22510 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 тис.11 місяців 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 42911 місяців 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 78Рік 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 295Рік тому
This video shows you how to produce histograms and density plots in R. I will also show you how you can combine the two. Data and code can be found here drive.google.com/drive/folders/1lStb85OsS_rjm1H0AlWctRC_f27tW2v9
R Tutorial: Boxplots using base R
Переглядів 242Рік тому
This video shows you how to produce boxplots in R and how to edit them so they are publication standard. Data and code can be found here drive.google.com/drive/folders/1lStb85OsS_rjm1H0AlWctRC_f27tW2v9?usp=sharing
R Tutorial: Friedman test
Переглядів 1,8 тис.Рік тому
This video shows you how to run a Friedman test in R, produce an effect size, and do post hoc tests. There is also some advice on how to produce suitable graphs. Data and code used can be found here drive.google.com/drive/folders/1NkqfjdgoPpcLXFQGc6YXel5mdXL_9AJk?usp=sharing
R tutorial: Descriptive statistics (and more) using skimr
Переглядів 1,1 тис.Рік тому
R tutorial: Descriptive statistics (and more) using skimr
R Tutorial: Exporting outputs from Lavaan
Переглядів 922Рік тому
R Tutorial: Exporting outputs from Lavaan
R Tutorial: Identifying duplicates in a data set
Переглядів 6 тис.2 роки тому
R Tutorial: Identifying duplicates in a data set
R tutorial: Automatically delete rows and columns of missing data
Переглядів 3,2 тис.2 роки тому
R tutorial: Automatically delete rows and columns of missing data
R tutorial: Automatically clean column names
Переглядів 2,6 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
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R Tutorial- Dealing with missing data
R Tutorial - Internal reliability using Cronbach’s Alpha and McDonald’s Omega
Переглядів 4,9 тис.2 роки тому
R Tutorial - Internal reliability using Cronbach’s Alpha and McDonald’s Omega
R Tutorial: Creating Street maps (part 1)
Переглядів 2,3 тис.2 роки тому
R Tutorial: Creating Street maps (part 1)
R tutorial: Independent groups ANOVA
Переглядів 1,4 тис.2 роки тому
R tutorial: Independent groups ANOVA
R tutorial: Structural equation modelling part 2 (indirect effectsl)
Переглядів 2,9 тис.2 роки тому
R tutorial: Structural equation modelling part 2 (indirect effectsl)
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?
Is there a link to access the data frame you used. It could be so nice helping me practice alongside.
Thank uu so much
Really helpful :-)
Does this analysis perform data estimation or casewise deletion?
Thank you!!!!! Saved me from LOADS of work
i have adoubt 1) the covariance between error terms in measurement model need to be maintained in sem analysis?
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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.
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Thank you very much, Prof Paul. Your video has helped me immensely.
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What if your between subject variable is continuous?
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