« The first major study using Covid tracking app data stumbles out of the gate | Main | Pre-processing data to avoid putting your foot in that puddle »


Feed You can follow this conversation by subscribing to the comment feed for this post.


Apparently Calif opened up testing to a broader audience on 4/21, and there is capacity to run 80,000 tests a day.



TBW: That might be true but it would be shocking to think they could process 165,000 tests in a single day, especially given previous reports of backlogs. It is also unlikely that the types of people getting tested switched diametrically overnight. The broadening is to "high risk" groups so I'm still skeptical.

Here's another innocent explanation: could it just be a typo? If we turn 165,000 into 16,000 tests, then both the volume and the percent positive goes back to the normal range.

The comments to this entry are closed.

Kaiser Fung. Business analytics and data visualization expert. Author and Speaker.
Visit my website. Follow my Twitter. See my articles at Daily Beast, 538, HBR, Wired.

See my Youtube and Flickr.
Numbers Rule Your World:
Amazon - Barnes&Noble

Amazon - Barnes&Noble


  • only in Big Data

Next Events

Jan: 10 NYPL Data Science Careers Talk, New York, NY

Past Events

Aug: 15 NYPL Analytics Resume Review Workshop, New York, NY

Apr: 2 Data Visualization Seminar, Pasadena, CA

Mar: 30 ASA DataFest, New York, NY

See more here


R Fundamentals, Principal Analytics Prep

Numbersense: Statistical Reasoning in Practice, Principal Analytics Prep

Applied Analytics Frameworks & Methods, Columbia

The Art of Data Visualization, NYU

Signed copies at McNally-Jackson, NYC

Excerpts: Numbersense Ch. 1, 7, 8. NRYW

Junk Charts Blog

Link to junkcharts

Graphics design by Amanda Lee