I am happy to announce that our paper entitled “Right to be forgotten for mortgage insurance issued to cancer survivors: critical assessment and new proposal” has been accepted for publication in European Actuarial Journal. In this paper, we propos...

Motivation Coarse data Simulated example Real data example References Motivation A group of researchers from the Data Science Institute (DSI) at Hasselt University developed a new statistical model to estimate the incubation period of a pathogenic organism based on coarse data. The incubation period of an infectious disease (defined as ...

Introduction Linear versus logistic regression Univariate versus multivariate logistic regression Data Binary logistic regression in R Univariate binary logistic regression Quantitative independent variable Qualitative independent variable Multivariate binary logistic regression Interaction Model selection Quality of a model Validity of the predictions Accuracy Sensitivity and specificity AUC and ROC curve Reporting ...

Introduction How likely is it? For our team For teams of different sizes Conclusion Introduction Last week, I joined a team to work on a collaborative project. The team was already established for a few months, with several scientists workin...

Introduction Data {dplyr} package Filter observations The pipe operator Extract observations Based on their positions Based on their values Sample observations Sort observations Select variables Rename variables Create or modify variables Summ...

Introduction Data With ties Without ties Correlation coefficients by hand Pearson With and without ties Spearman With ties Without ties Kendall Without ties With ties Verification in R Conclusion Introduction In statistics, a correlation is used to evaluate the relationship between two variables. In a previous post, we showed how ...

Introduction Data and hypotheses ANOVA by hand Overall and group means SSR and SSE ANOVA table Conclusion of the test Conclusion Introduction An ANOVA is a statistical test used to compare a quantitative variable between groups, to determine if there is a statistically significant difference between several population means. In ...

Introduction Scraping Yahoo search engine results with R Conclusion Note: This is a guest post by Manthan Koolwal, founder of Scrapingdog. Introduction Web scraping is the process of extracting data from websites. It is usually done in an automated manner to obtain a large amounts of data through various websites, ...

Introduction The two-way ANOVA (analysis of variance) is a statistical method that allows to evaluate the simultaneous effect of two categorical variables on a quantitative continuous variable. The two-way ANOVA is an extension of the one-way ANOVA since it allows to evaluate the effects on a numerical response of two ...

Introduction What types of jobs are available? Statistician Data scientist, data/business analyst, data engineer or machine learning engineer Actuary or actuarial analyst Financial (risk) analyst, investment analyst, financial trader, financial ma...

Introduction 1. Unmatched parentheses, curly braces, square brackets or quotes 2. Using a function that is not installed or loaded 3. Typos in function, variable, dataset, object or package names 4. Missing, incorrect or misspelled arguments in fun...

Introduction HTML and CSS Web scraping vs. APIs Why does web scraping exist if APIs are so powerful and do exactly the same work? Web scraping in R rvest HTTP GET request Parsing HTML content CSS selector XPath Getting attributes A real app...

Introduction What is survival analysis? Why do we need special methods for survival analysis? Common functions in survival analysis Survival function Cumulative hazard function Hazard function Estimation By hand In R Hypothesis testing Log-ran...

Introduction Prerequisites Analytics Page views over time Page views per month and year Top performing pages Page views by country Page views per day of week Thank you note Introduction It is almost the end of the year, which means it is tim...

Introduction Motivation Getting started A simulated example Smoothing the epidemic curve and estimating \(\mathcal{R}_t\) USA hospitalization data References Introduction A colleague (and friend) of mine recently published a research paper ...

Introduction How do I keep track? Twitter Newsletters Conclusion Introduction At the end of one of the training sessions I gave on R, a student asked me the following question: How do you keep yourself updated with the latest R news? It is true that R, being open source (meaning ...

Introduction When? Data How? Combine statistical test and plot References Introduction In a previous article, we showed how to do a two-sample Wilcoxon test in R. Remember that there are actually two versions of this test: The Mann-Whitney-W...

Introduction Before 2022 In 2022 Probabilities computation in R First draw Second draw Third draw Game limited to 3 draws Game limited to 5 draws Game limited to 100 draws Game limited to the number of necessary draws Final winning probabilities ...

I am happy to announce that our paper entitled “Semi-Markov modeling for cancer insurance” has been accepted for publication in the European Actuarial Journal. Advancements in medicine and biostatistics have already resulted in a better access to ...

Introduction Data Kruskal-Wallis test Aim and hypotheses Assumptions In R Interpretations Post-hoc tests Dunn test Pairwise Wilcoxon test Combination of statistical results and plot Summary References Introduction In a previous article, we showed how to do an ANOVA in R to compare three or more groups. Remember that, as for ...