Stories by jmount

Excel spreadsheets are hard to get right

Any idea what is going on in this LinkedIn web form?

Estimating generalization error with the PRESS statistic

Factors are not first-class citizens in R

Half of a Coin: Negative Probabilities [pdf]

Fractional calculus

Women in Data Science – Positive Imagery for the Win

Automating variable treatment for modeling

Vtreat: a simple library for preparing R dataframes for analysis

Sixth grader's internet-famous science project may have been plagiarized

Utomatic bias correction doesn’t fix omitted variable bias

Frequentist inference only seems easy

The Data Enrichment Method

R minitip: don’t use data.matrix when you mean model.matrix

R code style tip: prefer functions that return data frames

Fighting resource leaks in R glm()

Living in A Lognormal World

On the Design of Display Processors (1968) [pdf]

Two of my favorite sections from Augustus de Morgan "A Budget of Paradoxes"

One reason I dread Google doc shares

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