Type I and Type II errors are, respectively, when you allow a statistical test to convinces you of a false effect, and when you allow a statistical test to convince you to dismiss a true effect. Despite being fundamentally important concepts, they are terribly named. Who can ever remember which way around the two errors go? Well now I can, thanks to a comment from a friend I thought so useful I made it into a picture:
Mind Hacks 
How effective is this mnemonic? Well, before, I didn’t even know what “Type 1& 2 errors” ARE!….
NOW, not only do I know what they are, I can easily tell them apart! *THIS* is what the internet is SUPPOSED to be about!….
Oh, yeah, and “Vive la FRANCE”!….
(c)2015, Tom Clancy, Jr.
*NON-fiction
This is very good, thanks.
Excellent – I often feel that these arbitrary labels are just shibboleths to separate the true believers from the unwashed masses.
Very concise. Thank you.
Although I was confused by the web address that brought me here:
https://mindhacks.com/2015/11/16/no-more-type-iii-error-confusion/
What on earth is a type *3* error? :p
….maybe a “typO error”….
Or, the 3rd of the 3 types of LIES, according to Mark Twain:
1. LIES
2. Damn LIES
3. Statistics
:p & lol
I have always preferred false-alarm and miss, respectively, thinking of smoke detectors.
Also you’re pregnant / no pregnant works