Tap / click on image to see more RealViewsTM
Sale Price $2.48.  
Original Price $3.10 Comp. value
per postcard
You save 20%

Simpson's Paradox (A.K.A. Yule-Simpson Effect) Postcard

Qty:
Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
-$0.30

Other designs from this category

About Postcards

Sold by

Size: Standard Postcard

Create your own vacation-worthy postcard! Any view you’ve seen, any monument you’ve fallen in love with, can all be added to your postcard with our personalization tool.

  • Dimensions: 5.6" L x 4.25" H; qualified USPS postcard size
  • High quality, full-color, full-bleed printing on both sides

Paper Type: Signature Matte

Our Signature Matte paper is a customer favorite—smooth to the touch with a soft eggshell texture that elevates any design. Its sturdy 18 pt weight and natural feel make it the ideal choice for timeless, sophisticated events.

  • Exclusively made for Zazzle
  • Made and Printed in the USA
  • FSC® Certified—sourced from responsibly managed forests that protect both people and planet

About This Design

Simpson's Paradox (A.K.A. Yule-Simpson Effect) Postcard

Simpson's Paradox (A.K.A. Yule-Simpson Effect) Postcard

Statisticians who work in the social sciences know about "Simpson's Paradox (A.K.A. Yule-Simpson Effect)", a paradox in which a correlation present in different groups is reversed when the groups are combined. This result is often encountered in social-science and medical-science statistics, and it is often found when frequency data are given causal interpretations. The practical significance of Simpson's paradox surfaces in decision making situations where it poses the following dilemma: Which data should we consult in choosing an action, the aggregated or the partitioned? If you're a die-hard statistician, you'll enjoy any of these Simpson's paradox gifts featuring a graph for continuous data. Notice how a positive trend appears for two separate groups (blue and red), yet a negative trend (black, dashed) appears when the data are combined.

Customer Reviews

4.9 out of 5 stars rating15.6K Total Reviews
14242 total 5-star reviews998 total 4-star reviews197 total 3-star reviews67 total 2-star reviews111 total 1-star reviews
15,615 Reviews
Reviews for similar products
5 out of 5 stars rating
By Ray A.September 30, 2025Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Very pleased with my order. All my prints were manufactured to a very high standard to my exact specifications and edited additions.
5 out of 5 stars rating
By Paul I.February 4, 2021Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Creator Review
I had never seen these classic science fiction images and most of my friends have not seen them either. They are like little treasures! Amazing quality and fun to send people!
5 out of 5 stars rating
By Jennifer W.November 28, 2022Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Zazzle Reviewer Program
I joined Postcrossing a few months ago and wanted postcards to represent my state well. I found them on Zazzle. I purchased numerous cards and was impressed with all of them. Excellent! The colors are beautiful. The cards have the exact look I wanted. I couldn't be happier.

Tags

Postcards
simpsons paradoxwords and unwordsstatisticsamalgamation paradoxyule simpson effectstatsmathgeek humorparadoxgraph
All Products
simpsons paradoxwords and unwordsstatisticsamalgamation paradoxyule simpson effectstatsmathgeek humorparadoxgraph

Other Info

Product ID: 239953491046890671
Created on: 7/14/2011, 10:27 AM
Rating: G