Categories: statistics

Recent Posts

Survivorship Bias: Why Success Case Studies Fool Us

We have all read it, perhaps on LinkedIn, complete with an upward-sloping chart: "We rewrote…

2 weeks ago

The p-value and Its Misconceptions: What p < 0.05 Really Means

"The new title has a p-value of 0.03: there is a 97% probability that it…

3 weeks ago

Multiple Comparisons: Why Out of 200 Queries Some Always «Improve» by Chance

In 2009 a group of neuroscientists put a salmon in a functional MRI scanner, showed…

3 weeks ago

SEO Split Testing: How to Tell Whether a Change Really Worked

Over the past few weeks I have reworked some of the most-read pages of this…

3 weeks ago

Keyword Clustering: grouping thousands of queries with K-means and hierarchical clustering

It happens with every reasonably serious project: you export the keyword list from Search Console…

4 months ago

Expected vs Actual CTR: finding the pages that earn fewer clicks than their position deserves

Anyone who spends their days inside Search Console knows that little nagging feeling: a page…

4 months ago