Rosane Rech

27/07/2021

Do you know how to calculate the natural variables in central composite designs?

This video shows you the relationship between the coded and natural variables for designed experiments.And to exemplify it, we will define the factorial poin...

28/06/2021

SUPER EASY Pie-Dunut chart using R!

R code: packages: ggplot2, webr, dplyrfunctions:PieDonutFollow:Website: https://statdoe.com/ Courses: https://statdoe.com/courses/ R-tutorials: https://stat...

21/06/2021

Hello everyone,
I have just published a new tutorial focused to help with the specific question about how to add and position the letters indicating significant differences in bar plots.

R code: https://statdoe.com/cld-customisation/packages: ggplot2, ggthemes, multcompView, dplyrfunctions: aov, TukeyHSD, multcompLetters4, group_by, summaris...

04/06/2021

Hi there,
The choice of how to present the results of a given experiment can be quite challenging.
In this new video, I have a suggestion on how to present the results of a three-factor experiment using barplot.
I hope you find it useful!

This video presents an R-tutorial suggestion on how to present the results of a three-factor experiment using bar plots.R packages: ggplot2, ggthemes, dplyr,...

28/05/2021

Hello everyone,
I have just published a new tutorial on box plots using ggplot.
The main highlights are:
- the letters to indicate significant differences among means
- the boxes are coloured according to the median value.
I hope you find it useful!

One-Way ANOVA, Tukey’s test, Box Plot with ggplot0:00 Introduction0:46 Description of the data set1:01 Loading the libraries and the data set1:55 Analysis of...

21/05/2021

Hello there,
In the same style as my previous video on barplots, this new video presents a step-by-step tutorial for a publication-quality scatterplot for two factors.
The tutorial covers the use of shapes, lines and colours to distinguish among treatments, error bars, letters to indicate significant differences among means, and how to avoid the overlapping of the points.
I hope you find it useful!

Welcome to the series of tutorials on Two-way ANOVA with R. In this series of videos, we are going to perform a complete analysis of a two-factor factorial d...

14/05/2021

Hi there,
I have just published a video-tutorial with a complete step-by-step tutorial on how to create publication-quality barplots for two factors in ggplot.
I hope you enjoy it!

Welcome to the series of tutorials on Two-way ANOVA with R. In this series of videos, we are going to perform a complete analysis of a two-factor factorial d...

10/05/2021

Do you know how to get the compact letter display (letters indicating significant difference) from Tukey's test automatically using R?
In this video I show how to:
- create a table with the mean and standard deviation of each treatment;
- compare the means by Tukey’s test;
- use the compact letter display (superscript letters) to indicate significant differences automatically!

Welcome to the series of tutorials on Two-way ANOVA with R. In this series of videos, we are going to perform a complete analysis of a two-factor factorial d...

08/04/2021

Design and analyse your experiments using R!

Design of Experiments: from ANOVA to Factorial Designs using Excel and R.

26/03/2021

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- central composite designs
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DoE using R: Response Surface Methodology, Lack-of-Fit, Central Composite Designs, Box-Behnken Designs

26/03/2021

New course coming up soon!