The AUC* or concordance statistic c is the most commonly used measure for diagnostic accuracy of quantitative tests. It is a discrimination measure which tells us how well we can classify patients in two groups: those with and those without the outcome of interest. Since the measure is based on ...

wrapr 1.6.2 is now up on CRAN. We have some neat new features for R users to try (in addition to many earlier wrapr goodies). The first is the %in_block% alternate notation for let(). The wrapr let()-block allows easy replacement of names in name-capturing interfaces (such as transform()), as ...

Introduction Data Pre-Processing Load Data Load Packages Clean Data Exploratory Data Analysis Distribution Avocado Prices Avocado Volume Elasticity Introduction The following report intends to analyze avocado prices and sales volume from 2015 to early 2018 across the US. In addition to a thorough exploratory analysis, I’ll also try to calculate the ...

A quick Random R thing I use a lot, recently learned, and I want you to know it too. In this post I’ll show you how to make a quick interactive plot with ggplot and plotly, so that values are displayed when you hover your mouse over it. Why ...

Introduction Data wrangling Initial analysis The painful part Introduction For this blog post, I decided to try to find a dataset covering an issue I feel quite strongly about - homelessness. I managed to find a fairly large dataset from the Cambridgeshire Insight website. For a while I’ve wanted ...

Recalling Le Monde mathematical puzzle  first competition problem For the X table below, what are the minimal number of lights that are on (green) to reach the minimal and maximal possible numbers of entries (P) with an even (P as pair) number of neighbours with lights on? In the illustration ...

With hurricane Florence bearing down with expected to be devastating force, it might be a good time to reflect on the history of Atlantic Hurricanes on the United States. As an easy if not full proof source for hurricane data I drew on public data collated through Wikipedia's list of ...

Click here for the interactive visualization If you're interested in the visualisation of networks or graphs, you might've heard of the great package "visNetwork". I think it's a really great package and I love playing around with it. The scenarios of graph-based analyses are many and diverse: whenever you can ...