I thought shoe sizes and rack dress sizes were interval data, not ordinal - the difference between a size 10 and 11 was the same as a 5 and 6 (some constant number of centimeters). You're quite right that the 0 point is frequently arbitrary, however this still makes means and variance and such valid measures.
To defend my assertion of ordinality, consider a user who rates apps a 1 star if they crash instantly, and then if it works somewhere between 2 and 5 stars depending on quality, with 4 stars being "good" and 5 stars being "favorite". If there were a good chunk of users rating in this fashion then it's very silly to claim that some percentage of users promoting the app from a 1 to a 2 is the same as some percentage promoting it from a 4 to a 5. Put briefly, one star could be the equivalent of a size 0 dress on a size 14 woman, while 2 through 5 stars were sizes 10-14. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/894468 Title: Statistics algorithm for sorting ratings looks fishy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/894468/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
