« Numbersense Pros: An interview with David Spiegelhalter | Main | Numbersense Pros: Cathy O'Neil talks about trust in data analysis »


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


2014-8 = 2006 not 2008?


It seems like no one has learnt the lessons of the early days of polling for voting intentions, where they managed to obtain a sample of only people who owned a telephone resulting in bias toward Republican voters. Looking at Twitter we probably have people who are more middle-class, more technologically aware and more opinionated than the average. Nice if that is what you want to sample, but I suspect it isn't what most companies are interested in.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.


Post a comment

Your Information

(Name is required. Email address will not be displayed with the comment.)


Link to Principal Analytics Prep

See our curriculum, instructors. Apply.
Business analytics and data visualization expert. Author and Speaker. Founder of Principal Analytics Prep, MS Applied Analytics at Columbia. See my full bio.

Next Events

May: 2 New York Marketing Association Big Data Workshop, NYC

May: 5 NYPL Analytics Careers Talk, NYC

May: 8 Data Visualization Seminar, Denver, CO

May: 15 Data Visualization Seminar, Cambridge, MA

May: 17 Data Visualization Seminar, Philadelphia, PA

May: 22 Data Visualization Seminar, San Ramon, CA

Past Events

See here

Future Courses (New York)

Summer: Statistical Reasoning & Numbersense, Principal Analytics Prep (4 weeks)

Summer: Applied Analytics Frameworks & Methods, Columbia (6 weeks)

Junk Charts Blog

Link to junkcharts

Graphics design by Amanda Lee


  • only in Big Data