Matt Webb
@mattdwebb
Followers
829
Following
15K
Media
50
Statuses
529
Associate Professor of Economics at Carleton University. Interested in statistical inference, empirical micro, and experiments.
Ottawa, Ontario
Joined April 2009
Hey #econtwitter, do you have a binary outcome? Estimate logit models? Want to cluster your standard errors? We've got bad, good, and great news for you. See the thread below, or our new working paper (with @jgmQED and @MortenEcon) for details 1/7
4
8
60
RT @MetricReviews: James MacKinnon, Morten Nielsen, and Matthew Webb (@mattdwebb ) propose a novel cluster-robust inference method for logi….
tandfonline.com
We study cluster-robust inference for logistic regression (logit) models. Inference based on the most commonly used cluster-robust variance matrix estimator (CRVE) can be very unreliable. We study ...
0
1
0
The most fun image & video creation tool in the world is here. Try it for free in the Grok App.
0
153
2K
RT @Stata: Meet, learn, and collaborate at the 2025 Canadian Stata Conference in Ottawa on 3 October. Connect with Stata users, developers….
stata.com
3 October 2025, Ottawa
0
1
0
The conference has a deadline of July 15th. For more information see the conference website: 3/3.
0
0
0
The special issue is edited by @lehrers, Morten Nielsen, and myself, with a submission deadline of December 1st. For more information, see the call for papers: 2/3.
drive.google.com
1
1
1
Excited to open the call for papers for the 40th Canadian Econometric Study Group (CESG) conference. The conference will be in Ottawa on October 17-19, this year's theme is `Credible Econometrics'. For more details, see .#econtwitter #cdnecon
0
1
7
boottest is now also much faster for calculating the WRE thanks to both partialling out exogenous controls, before the bootstrap, and from reducing the total number of calculations by first calculating groupwise inner products similar to . 4/4.
0
0
1
boottest is normally quite fast. When there are many clusters, it can be a bit slow. @davidroodman added a #JuliaLang option ", julia" which can 10x speed. See for more about interfacing Stata with Julia 3/4.
1
1
2
The standard wild cluster bootstrap is usually quite reliable. introduces WCR-S, which improves reliability with heterogenous clusters. This can be invoked using the ",jackknife" option. 2/4.
onlinelibrary.wiley.com
We provide computationally attractive methods to obtain jackknife-based cluster-robust variance matrix estimators (CRVEs) for linear regression models estimated by least squares. We also propose...
1
0
1
I'm thrilled that our boottest article recently surpassed 1000 citations. This is beyond what we ever expected. To celebrate, I’ll highlight two new features added since the article was published. The first concerns speed, the second reliability. #econTwitter 1/4
2
1
21
RT @I4Replication: We did not want to start the week like this, but here we are. Yet again our chair’s inbox is filled with messages from r….
0
24
0
RT @I4Replication: What is I4R supposed to do? Honestly, we need help. If a faculty has experience and wants to join us as a I4R co-directo….
0
1
0
RT @DavidJo30329121: As a prof who just finished assigning grades, I really hope that, for AI’s sake, that AI didn’t help students much.
0
1
0
RT @King_ofSweden: Today, many of us gathered in Western to celebrate the life and accomplishments of my friend and coauthor Paul Klein. ht….
0
9
0
RT @SpencerHakimian: Warren Buffett just got a 10 minute long standing ovation after announcing his retirement. Curtain call for the capt….
0
1K
0
RT @bruno_ferman: 🧵New survey paper: "Inference with Few Treated Units" .Alvarez (@lafalvarez), Ferman (@bruno_ferman) and Wüthrich. Tired….
0
90
0
TFW you threaten to fire the Governor of the Bank of Canada and a former Governor takes your job.
1
0
4
RT @ChrisJWorswick: Below is an opinion piece I was asked to write by the Toronto Star comparing the federal parties’ economic plans. http….
apple.news
Arguably, the largest difference between the Conservative and Liberal economic plans relates to the development of key resource sectors and their implications for combating climate change.
0
2
0