Quote:
Originally Posted by chattiesmom  If I understand correctly, the Mars test cannot determine whether or not a dog is a "purebred" dog, i.e. Yorkie, German Shepherd, Poodle, Boxer, etc. If that is true then how can the test determine that a dog is part Yorkie, German Shepherd, Poodle, Boxer, etc?
If you can't identify the whole, how can you identify parts of the whole? |
That's a very interesting question--and the exact one that caused me to ask for statistics on their false positive and false negative (type I and type II) error rates.
The analogy I use is: If I don't know what either a pickup truck or a sports car looks like, how can I tell if someone put them together like someone tried to do in this photo:
http://www.clicksaab.com/images/1002186_1.jpg I gotta know what one is, AND what the other is, before I can discern what the parts of the car in the silly photo are.
Same with dogs, I think.