normal Flashcards
(5 cards)
1
Q
where are the p.o.i on the normal curve
A
one s.d away from the mean (both sides)
2
Q
standardising formula
A
z = (xbar- mu)/s.d
3
Q
limits of normal
A
no upper/lower limit
4
Q
median and mode of normal
A
mu = median = mode
as symmetric
5
Q
percentile
A
goes Lā> R
so 99th percentile is
P(X<a) = .99
