Z-score formula:
Z= (x-xbar)
---------
ox
" the z score measures the distance plus or minus from the mean in units of std deviation"
x- what you got
xbar- what they got
ox- std deviation
if number is negative its BAD, positive, GOOD!
TO CLR LIST 2nd + 4 ENTER
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment