What is a Z-score? A Z-score is a measure calculated for each and every individual from a sample, that takes into account the individual’s personal score, the sample’s mean and the sample’s standard deviation, and thus, attributes each and every individual from a certain sample, to the sample it originated Read more…
R Studio is a powerful, open-source programming language and integrated development environment (IDE) that is widely used by data scientists and analysts for statistical computing, data visualization, and machine learning. In the real world, R Studio is used in a variety of industries and applications, including finance, healthcare, marketing, and Read more…
Why would one want to add comments to his or her script? A code may be more advanced or less advanced, but as time goes by, and work piles up, naturally, we may forget what we’ve done, or forget our methods or could use a refresher when that’ll help us Read more…
The function all() is designed to test a vector or a data frame or a variable within a data frame, and make sure all its values follow a certain rule or rules. If all the values obey to this rule or rules, the result will be TRUE, otherwise the result Read more…
Sometimes we want to show separate groups from a single dataset, upon a histogram plot. In R we can do it in several ways. In this article, we’ll discuss how to do it using the ggplot2 package, and the facet_grid tool. First, let’s generate our dataset. We’ll also use the Read more…