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partworth: hierarchical Bayes for choice-based conjoint in Python

partworth: hierarchical Bayes for choice-based conjoint in Python

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6 min read
Three runs is not a sample size. It is a decision rule — and its error is exactly computable.

Three runs is not a sample size. It is a decision rule — and its error is exactly computable.

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6 min read
A 48-Hour Burst of 5-Star Reviews Is Never Organic: How We Detect Review Inflation

A 48-Hour Burst of 5-Star Reviews Is Never Organic: How We Detect Review Inflation

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5 min read
The Bad Month Was Always Going to Be Followed by a Better One

The Bad Month Was Always Going to Be Followed by a Better One

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2 min read
What a random scratch ticket should look like (and why the 2003 one didn't)

What a random scratch ticket should look like (and why the 2003 one didn't)

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2 min read
Twice the submissions, half the hits: the Show HN middle class is evaporating

Twice the submissions, half the hits: the Show HN middle class is evaporating

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3 min read
Giving Evolved Monopoly Players a Memory of Past Trades

Giving Evolved Monopoly Players a Memory of Past Trades

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8 min read
Monowi, Nebraska: the town whose census counts to two

Monowi, Nebraska: the town whose census counts to two

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2 min read
How We Built a Fake-Review Detector Using Wilson Confidence Intervals and Bayesian Inference

How We Built a Fake-Review Detector Using Wilson Confidence Intervals and Bayesian Inference

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3 min read
A Reader Was Right About My Permutation Test: Rerun With 400 Markets (Python)

A Reader Was Right About My Permutation Test: Rerun With 400 Markets (Python)

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4 min read
A Practical Statistics Cheat Sheet for A/B Tests (With Calculators)

A Practical Statistics Cheat Sheet for A/B Tests (With Calculators)

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1 min read
Eleven Number-One Records: Measuring a Model That Swept Math, Science, Law and Decisions

Eleven Number-One Records: Measuring a Model That Swept Math, Science, Law and Decisions

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2 min read
Why Running Three t-Tests Is a Bug (and How One-Way ANOVA Fixes It)

Why Running Three t-Tests Is a Bug (and How One-Way ANOVA Fixes It)

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16 min read
Finding Outliers with the IQR Method: Tukey Fences, Quartile Gotchas, and Code

Finding Outliers with the IQR Method: Tukey Fences, Quartile Gotchas, and Code

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9 min read
Cronbach’s Alpha Explained: Formula, Worked Example, and Python Code

Cronbach’s Alpha Explained: Formula, Worked Example, and Python Code

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7 min read
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