R-bloggers

The models we have been looking at do not differentiate between positive and negative residuals: both errors are treated the same. However, this does not align with reality, where the volatility resulting from a large negative return is higher than that for the corresponding positive return.

IntroductionIn the world of scientific research and academic writing, the clarity, precision, and aesthetics of your documents can significantly impact their reception and comprehension. LaTeX, a powerful typesetting system, has long been revered for its ability to create beautifully formatted documents, especially those requiring complex mathematical expressions and detailed layouts. ...

Simulate adverse event reporting in clinical trials with the goal of detecting under-reporting sites. Monitoring of Adverse Event (AE) reporting in clinical trials is important for patient safety. We use bootstrap-based simulation to assign an AE ...

Announcing the Launch of vvdoctor: A Shiny App for Effortless Data Analysis vvdoctor We are excited to announce the launch of vvdoctor, a new R Shiny app (and package) that provides a user-friendly interface for statistical testing from dat...

The R Consortium recently spoke with the organizing team of the R User Group at the University of Manchester (R.U.M.). R.U.M. aims to bring together R users of all levels... The post The Impact of R on Academic Excellence in Manchester, UK appeared first on R ...

These are the packages we will need for this analysis. library(tidyverse) library(data.table) library(dtplyr) library(duckdb) library(duckplyr) library(polars) library(tidypolars) library(arrow) library(tictoc) library(microbenchmark) library(gt) The Tidyverse I love the Tidyverse from Posit.co. The biggest evolution of the R language ecosystem ...

As an ecologist, being able to easily visualize biodiversity occurrence data is an essential need as this kind of data visualization provides critical insights into species distribution patterns and ecological requirements, which is essential for understanding biodiversity dynamics in space and time. Moreover,  for pragmatic reasons, fast and simple biodiversity ...

#171–172PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #171Power Query puzzles are very often focused on transformation of tables in very different ways. And we ...

Contributed by Abbie Brookes, Senior Data Analyst at Datacove Datacove is pleased to announce the availability of tickets for the upcoming EARL (Enterprise Applications of the R Language) conference.  The... The post EARL Early Bird Tickets Are Now Available! appeared first on R Consortium.

Git best practices are essential for developers looking to manage their projects efficiently. In this article, we’ll dive into the key techniques that can transform your version control workflow, ensuring you leverage Git to its full potential for improved productivity and collaboration.‍ We already introduced you to Git and ...

Puzzles no. 424–428PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #424We are playing with numbers very often, and sometimes is just playing for playing. Like tod...

I’m going to be writing a series of posts which will look at some applications of R (and perhaps Python) to financial modelling. We’ll start here by pulling some stock data into R, calculating the daily returns and then looking at correlations and simple volatility estimates.

Conformalized predictive simulations for univariate time series on more than 250 data sets.