truncated mixtures
A question on X validated about EM steps for a truncated Normal mixture led me to ponder whether or not a more ambitious completion [more ambitious than the standard component...continue reading.
Category: Statistics
null recurrent = zero utility?
The stability result that the ratio converges holds for a Harris π-null-recurrent Markov chain for all functions f,g in L¹(π) [Meyn & Tweedie, 1993, Theorem 17.3.2] is rather fascinating. However,...continue reading.
a simpler (?) birthday problem
A monthly birthday problem from the Riddler: What was the probability that none of the 40 people had birthdays this month? What is the probability that there is at least...continue reading.
Using R to detect the pressure wave from the 2022 Hunga Tonga eruption in personal weather station data
It seems like an age ago, but in fact it was only mid-January 2022 when this happened: The answers are yes and yes again. One excellent source of weather station...continue reading.
Using R/fitzRoy to ask: how many times a V/AFL team with the same lineup has played together?
If you sit in the intersection of “likes Australian Rules football / finds sport statistics interesting / is on Twitter”, you’ve probably come across Swamp. One of his recent tweets...continue reading.
extinction minus one
The riddle from The Riddler of 19 Feb. is about the Bernoulli Galton-Watson process, where each individual in the population has one or zero descendant with equal probabilities: Starting with...continue reading.
learning base R [book review]
This second edition of an introductory R book was sent to me by the author for a potential CHANCE book review. As there are many (many) books in the same...continue reading.
blind monty hall
As I was waiting for my boat on a French Guiana beach last week, I thought back about a recent riddle from The Riddler where an item does a random...continue reading.
MANOVA in R – How To Implement and Interpret One-Way MANOVA
The R programming language packs a rich set of statistical functions. It makes it easy to do any kind of statistical test, including the analysis of variance. Today you’ll learn...continue reading.
triple ruin
An almost straightforward riddle from The Riddler involving a triple gambler’s ruin: Dawn competes against three players Alessandra, Berenike, and Chinue, with probabilities of winning one round ¾, ½, and...continue reading.
ANOVA in R – How To Implement One-Way ANOVA From Scratch
If you dive deep into inferential statistics, you’re likely to see an acronym ANOVA. It comes in many different flavors, such as one-way, two-way, multivariate, factorial, and so on. We’ll...continue reading.
Can p-values be interpreted as continuous measures of evidence for an effect?
Note also the blog post by Daniel Lakens on the same topic here. Background Criticism of p-values has been rampant in recent years, as were predictions of their imminent demise....continue reading.
Can p-values be interpreted as continuous measures of evidence for an effect?
Note also the blog post by Daniel Lakens on the same topic here. Background Criticism of p-values has been rampant in recent years, as were predictions of their imminent demise....continue reading.
EASE vs. Fisher’s exact test
EASE is a modified version of Fisher’s exact test. It’s used in DAVID. We are often asked about their difference. Here is. From DAVID website: https://david.ncifcrf.gov/content.jsp?file=functional_annotation.htmlA Hypothetical Example In…continue reading.
Xing glass bridges [or not]
A riddle from the Riddler surfing on Squid Games. Evaluating the number of survivors (out of 16 players) able to X the glass bridge, when said bridge is made of...continue reading.
Xing glass bridges [or not]
A riddle from the Riddler surfing on Squid Games. Evaluating the number of survivors (out of 16 players) able to X the glass bridge, when said bridge is made of...continue reading.
Bayesian, frequentist and statistical learning perspectives on penalising model complexity
In regression analysis, a common problem is to decide on the right functional form of the fitted model. On the one hand, we would like to make the model as...continue reading.
Little useless-useful R functions – Useless Year Progress bar with spinning cursor
Progress bar showing the number of days until end of the year. Yes, only based on the days and not hour. And needless to say, the progress is soothing using...continue reading.
moralizing gods drive Nature rejection
This article is originally published at https://xianblog.wordpress.com Thanks for visiting r-craft.org This article is originally published at https://xianblog.wordpress.com Please visit source website for post related comments.continue reading.
Gene names, data corruption and Excel: a 2021 update
It’s an old favourite of this blog, isn’t it. We had Gene name errors and Excel: lessons not learned (2012). Followed by Data corruption using Excel: 12+ years and counting...continue reading.
