(Kachigan)
|
Subject |
Notation
|
Variable
|
x, y, z |
Observation (value of variable for object i)
|
xi |
Frequency of value xi
|
fi |
Probability of an event A
|
P(A) |
Probability that variable x takes values between a and
b
|
P(a £ x £ b) |
Variable x is normally distributed with mean µ &
variance s2
|
x ~ N(µ, s2) |
Variable z has the normal standard distribution
|
z ~ N(0, 1) |
Sum of all observations xi, from i =a to i =
b
|
|
|
Measure |
Population parameter |
Sample statistic |
Mean
|
µ |
|
|
Standard
deviation |
s |
s |
Variance
|
s2 |
s2
|
Proportion
|
p |
|
Complementary proportion
|
q=1-p |
|
Number of cases
|
N |
n
|
Generic parameter
|
|
|
