Eric (@expersso) profile picture

Eric

@expersso

economics, #rstats, https://teapawt.net/t.co/CII5gMcNXw

 Germany
github.com/expersso
Joined January 2015
  • Tweets690
  • Following3.1K
  • Followers316
137Media
Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)Photo by Eric (@expersso)
Fun question to solve with #mathematica.
Image from Eric (@expersso)
Quantіan (@quantian1) profile pictureQuantіan
@quantian126 Jun 2023
Junior data scientist interview question: Assume you generate points X = N(0,1); Y = N(0,0.1). Rotate the (x,y) dataset 45 degrees, so they look something like pic below (line is y = x). If you were to calculate the OLS regression y = b1*x + b0, what is E[b1] as n->infinity?
Image from Quantіan (@quantian1)
2
414
My solution using #Mathematica @WolframResearch .
Image from Eric (@expersso)
This Post is from an account that no longer exists. Learn more
Fun way to solve this problem in #Mathematica using built-in optical character recognition and translation.
Image from Eric (@expersso)
Your Daily Epsilon of Math (@Daily_Epsilon) profile pictureYour Daily Epsilon of Math@Daily_Epsilon25 Jan 2020
Today's #dailymaths problem from the Mathematics 2020 calendar in pic. Solution will post tomorrow. Daily problems with previous day's solution are tweeted ~6am Eastern. Solutions by me and/or @MathsTim unless otherwise stated. Guest solution posts welcome--DM if interested.
Image from Your Daily Epsilon of Math (@Daily_Epsilon)
3
Cobweb plots in #Mathematica.
Image from Eric (@expersso)
Analysis Fact (@AnalysisFact) profile pictureAnalysis Fact@AnalysisFact19 Jan 2020
New post: Cobweb plots johndcook.com/blog/2020/01/1…
Image from Analysis Fact (@AnalysisFact)
Image from Analysis Fact (@AnalysisFact)
Image from Analysis Fact (@AnalysisFact)
Image from Analysis Fact (@AnalysisFact)
1
Neil Peart September 12, 1952 - January 7, 2020
Image from Rush (@rushtheband)
5,886
27,249
11,812
77,616
Simple optimization problem today: #Mathematica #WolfLang
Image from Eric (@expersso)
Your Daily Epsilon of Math (@Daily_Epsilon) profile pictureYour Daily Epsilon of Math@Daily_Epsilon9 Jan 2020
Today's #dailymaths problem from the Mathematics 2020 calendar in pic. Solution will post tomorrow. Daily problems with previous day's solution are tweeted ~6am Eastern.
Image from Your Daily Epsilon of Math (@Daily_Epsilon)
1
3
My solutions in #Mathematica #WolfLang and #rstats.
Image from Eric (@expersso)
Your Daily Epsilon of Math (@Daily_Epsilon) profile pictureYour Daily Epsilon of Math@Daily_Epsilon8 Jan 2020
Today's #dailymaths problem from the Mathematics 2020 calendar in pic. Solution will post tomorrow. Daily problems with previous day's solution are tweeted ~6am Eastern. Today’s is perhaps trickier than it seems, so good luck!
Image from Your Daily Epsilon of Math (@Daily_Epsilon)
2
4
Recurse all the things! My solution to Day 6 of #AdventOfCode using #rstats: github.com/expersso/advent_o…
Image from Eric (@expersso)
2
7
My solution to Day 5 of #AdventOfCode using #rstats: github.com/expersso/advent_o…
Image from Eric (@expersso)
1
5
I'm solving #AdventOfCode using only base #rstats here: github.com/expersso/advent_o…
GitHub - expersso/advent_of_code_2019

GitHub - expersso/advent_of_code_2019

Contribute to expersso/advent_of_code_2019 development by creating an account on GitHub.

github.com
Rasmus Bååth (@rabaath@fosstodon.org) (@rabaath) profile pictureRasmus Bååth (@[email protected])@rabaath8 Dec 2019
Yes, any other #rstats aficionados doing #AdventOfCode this year? (I’m working on to catch up here: github.com/rasmusab/r-advent…
GitHub - rasmusab/r-advent-of-code-2019: Advent of Code solutions written in R.

GitHub - rasmusab/r-advent-of-code-2019: Advent of Code solutions written in R.

Advent of Code solutions written in R. Contribute to rasmusab/r-advent-of-code-2019 development by creating an account on GitHub.

github.com
1
7
The ability to use sympy directly in @rstudio using an rmarkdown notebook is *chef's kiss*. #rstats
Image from Eric (@expersso)
3
7
How to plot the Mandelbrot set in 22 LOC using #rstats and ggplot2.
Image from Eric (@expersso)
1
8
New blog post, in which I solve a neat problem posed by @ryxcommar using some lesser-known base #rstats functions: eric.netlify.com/2019/08/20/…
1
1
4
Very content with this regex #rstats.
Image from Eric (@expersso)
4
The least appealing aspect of maintaining packages on CRAN. #rstats
Image from Eric (@expersso)
1
2
In grad seminar we've been talking recently about getting data from the web. Here are my notes and code-through for using rvest to scrape tables and automate file downloads in #rstats, with semi-random shoutouts to @juliasilge, @expersso, and @VincentAB: cmcr-class.rbind.io/blog/201…
2
14
1
49
New #rstats blog post: XKCD and the normal distribution eric.netlify.com/2019/03/04/… Inspired by @tslumley teapawt.net/xkcdComic/status/11014…
Image from Eric (@expersso)
XKCD Comic (@xkcdComic) profile pictureXKCD Comic
@xkcdComic1 Mar 2019
Normal Distribution xkcd.com/2118/ m.xkcd.com/2118/
Image from XKCD Comic (@xkcdComic)
1
3
PMF and likelihood of a binomial rv in ggplot2. Gist: git.io/fh2t7 #rstats
Image from Eric (@expersso)
Image from Eric (@expersso)
1
2
Or analytically: c("Team A wins" = dbinom(0, 20, 0.055), "Draw" = dbinom(1, 20, 0.055), "Team B wins" = 1 - pbinom(1, 20, 0.055)) Team A wins Draw Team B wins 0.32 0.38 0.30 #rstats
Eric (@expersso) profile pictureEric@expersso19 Dec 2018
x <- replicate(10000, sum(sample(0:1, 20, TRUE, c(0.945, 0.055)))) table(ifelse(x == 0, "Team A win", ifelse(x == 1, "Draw", "Team B win"))) / 100 Draw Team A win Team B win 37.52 32.18 30.30 #rstats
1
5
x <- replicate(10000, sum(sample(0:1, 20, TRUE, c(0.945, 0.055)))) table(ifelse(x == 0, "Team A win", ifelse(x == 1, "Draw", "Team B win"))) / 100 Draw Team A win Team B win 37.52 32.18 30.30 #rstats
This quoted post is unavailable.
Try viewing anyway · View on X
1
5
Load more