Ch 6 - The Normal Distribution Flashcards
1
Q
abcissa
A
horizontal (X) axis
2
Q
ordinate
A
vertical (Y) axis
3
Q
density
A
height of the curve for a given value of X; closely related to the probability of an observation falling in an interval around X
4
Q
standard normal distribution
A
a normal distribution w/ a mean equal to 0 and a standard deviation equal to 1; denoted as N(0,1)
5
Q
linear transformation
A
a transformation involving addition, subtraction, multiplication, or division of or by a constant
6
Q
z score
A
number of standard deviations above or below the mean
7
Q
standard scores
A
scores w/ a predetermined mean and standard deviation
8
Q
percentile
A
the point below which a specified percentage of the observations fall
9
Q
T scores
A
a set of scores w/ a mean of 50 and a standard deviation of 10
