Greek Letters in Statistics
Letter
|
Name |
Statistical Reference |
|
a |
alpha -
lower case
|
Significance, i.e. the probability of a type I error.
Confidence
is (1 - a)⋅100% .
|
|
b |
beta - lower case
|
Consumer's risk, i.e. the probability of a type II error.
|
|
m |
mu - lower case
|
Population mean.
|
|
s |
sigma
- lower case
|
Population standard deviation.
|
|
S
|
sigma
- upper case
|
Tells
the reader to sum what follows it in a formula. |
|
r |
rho - lower case
|
Population correlation coefficient.
|
|
q |
theta
- lower case
|
Population proportion (in some texts).
|
|
c 2 |
lower
case chi squared (Greek
letter squared) |
A type of probability distribution used in testing hypotheses involving
more than two possible outcomes.
|