## Zstat,c formula-understanding a symbol "l"

Standard deviation, mean, variance, z-scores, t-tests, etc.

### Zstat,c formula-understanding a symbol "l"

Aloha, I'm an older grad student (MPHc) @ SJSU. Our 7-week, distance learning, online Biostatistics course has just begun and I'm feeling really ignorant. However, I am smart (3.95 GPA). I got through trig in HS but never took college algebra or stats. I am missing some info that is hard to find. I was successful at defining and understanding mCn (or nCr), finding the slope of a line and how to use^ on my calculator thanks to a HS math teacher. Now I'm stuck on even naming what I don't understand. It's a symbol in a Zstat,c formula (continuity-correction). In this formula, it looks like a vericle line in front of P-hat - p0, and follows it too. Kind of like this I p-hat - p0 I . I just do't know what it means or what to do with it when calculating the Zstat,c formula by hand. Mahalo for your help. Surfnshred
surfnshred

Posts: 2
Joined: Sun Jan 25, 2009 8:12 pm

Are you perhaps referring to absolute-value bars...?

Eliz.

stapel_eliz

Posts: 1784
Joined: Mon Dec 08, 2008 4:22 pm

### Re: Zstat,c formula-understanding a symbol "l"

Mahalo,
This appears to be the information I lacked-something like perentheses but slightly different.
Many thanks. Surfnshred
surfnshred

Posts: 2
Joined: Sun Jan 25, 2009 8:12 pm