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joachimschork.bsky.social
Adding statistical metrics to your plots can transform your visualizations from basic to highly informative.

More details: statisticsglobe.com/online-cours...

#rprogramminglanguage #visualanalytics
June 2, 2025 at 2:23 PM
joachimschork.bsky.social
Ensuring homogeneity of variance (homoscedasticity) is often considered a key assumption in linear regression.

The plot below visually demonstrates how heteroscedasticity can manifest in residuals.

Learn more: eepurl.com/gH6myT

#rprogramminglanguage #advancedanalytics #package
July 14, 2025 at 2:23 PM
joachimschork.bsky.social
The "Grammar of Graphics" is a powerful concept that ggplot2 in R is built on.

Take a look here for more details: statisticsglobe.com/online-cours...

#rprogramminglanguage #visualanalytics #datascience
June 19, 2025 at 9:38 AM
joachimschork.bsky.social
A sinusoidal model describes data that follows repeating cycles using sine or cosine functions.

Image: en.wikipedia.org/wiki/Sine_an...

More: eepurl.com/gH6myT

#bigdata #rprogramminglanguage #statisticalanalysis #datastructure #analysis
November 20, 2025 at 10:38 AM
joachimschork.bsky.social
When dealing with missing data, maintaining the underlying structure and variability of the data is critical, especially for nonlinear relationships.

Full tutorial here: statisticsglobe.com/predictive-m....

Further details: statisticsglobe.com/online-cours...

#rprogramminglanguage#visualanalytics
April 9, 2026 at 9:38 AM
joachimschork.bsky.social
Multiple imputation by chained equations (MICE) is a widely used method for handling missing data, offering flexibility and robustness across a variety of data sets.

More details: statisticsglobe.com/online-cours...

#database #rprogramminglanguage #datastructure #research #datavisualization #data
April 13, 2026 at 2:23 PM
joachimschork.bsky.social
Handling missing data correctly is essential if you want reliable and unbiased results!

I have created a tutorial that explains predictive mean matching in more detail: statisticsglobe.com/predictive-m...

Take a look here for more details: statisticsglobe.com/online-cours...

#rprogramminglanguage
January 8, 2026 at 10:38 AM
joachimschork.bsky.social
Missing data is a common issue in data analysis, and there are several approaches to handle it.

The attached image illustrates the structure of missing values in a data set, with missing values shown in red and observed values in blue.

More: www.youtube.com/watch?v=oPFs....

#rprogramminglanguage
June 9, 2025 at 2:23 PM
joachimschork.bsky.social
People often ask how to visualize multiple biplots, each showing different combinations of principal components, on a single graph.

More details are available at this link: statisticsglobe.com/online-cours...

#analysis #statisticians #datasciencecourse #rprogramminglanguage #data
August 3, 2026 at 2:23 PM
itfeature.bsky.social
The cv.lm() function in R is used to perform k-fold cross-validation on linear regression models. The cv.lm() function is primarily available in the DAAD R Package, though similar functions exist in other R packages, such as lmvar and cv.
#rprogramminglanguage #learnRLanguage #cv.lm()functioninR
K-Fold Cross-Validation
The cv.lm() function in R is used to perform k-fold cross-validation on linear regression models. The cv.lm() function is primarily available in the DAAD R Package, though similar functions exist in other R packages, such as lmvar and cv. K-Fold Cross-Validation using cv.lm() Function cv.lm() Function Syntax and Important Arguments Practical Applications of cv.lm() Function Understanding the Visual Output…
rfaqs.com
February 14, 2026 at 5:56 PM
itfeature.bsky.social
Master essential R functions for statistical testing. Learn how to perform correlation, covariance, and t-test in R (One-Sample, Independent, Paired) in R. Perfect for data analysts, students, and job test preparation with practical code examples. #learnRlanguage #rmcqs #rquiz #RProgrammingLanguage
How to Do a T-Test in R
Master essential R functions for statistical testing. Learn how to perform correlation, covariance, and t-test in R (One-Sample, Independent, Paired) in R. Perfect for data analysts, students, and job test preparation with practical code examples. How can one compute correlation and covariances in R? What are the different methods for computing correlation in R? Explain how t-test is performed in R?
rfaqs.com
September 2, 2025 at 8:04 AM
joachimschork.bsky.social
The Standard Error measures how much a sample statistic, like the mean, is expected to vary from the true population parameter.

Learn more: statisticsglobe.com/online-cours...

#rprogramminglanguage #businessanalyst #data
July 2, 2026 at 9:38 AM
joachimschork.bsky.social
The Wiener process is a key mathematical model used to describe random movement in continuous time and space.

Image: en.wikipedia.org/wiki/Random_...

More details: statisticsglobe.com/random-walk-r

#rprogramminglanguage #statistical #businessanalyst
March 19, 2026 at 10:38 AM
joachimschork.bsky.social
While Principal Component Analysis (PCA) is a powerful tool for simplifying complex data, it's important to recognize its limitations.

Learn more by visiting this link: statisticsglobe.com/online-cours...

#rprogramminglanguage #analytics #data
March 5, 2026 at 10:38 AM
joachimschork.bsky.social
Effective data visualization is essential for statistical analysis and informed decision-making.

You can access the free module on violin plots here: statisticsglobe.com/online-cours...

More details: statisticsglobe.com/online-cours...

#dataanalytics #visualanalytics #rprogramminglanguage
January 26, 2026 at 3:23 PM
joachimschork.bsky.social
When working with missing data, multiple imputation provides a powerful and robust solution to address incomplete data sets.

Mice package: github.com/amices/mice

More: eepurl.com/gH6myT

#programming #package #database #rprogramminglanguage #businessanalyst #datavisualization #datasciencecourse
October 23, 2025 at 9:38 AM
joachimschork.bsky.social
There are many reasons why you should switch to R, even if you are already familiar with another tool!

More information: statisticsglobe.com/online-cours...

#rprogramminglanguage #data #datasciencecourse
May 29, 2025 at 9:38 AM