20021201
7-9-6
Tests
k
t
Test
1-Sample
t
Test
Command:
OneSampleTTest
䡺
Description:
Tests a hypothesis relative to a population mean when population standard
deviation is unknown. A 1-Sample
t
Test
is used for
t
distribution.
t
=
o
–
0
µ
σ
x
n
–1
n
o
: mean of sample data
µ
0
: assumed population mean
x
σ
n
-1
: sample standard deviation
n
: sample size
Command Syntax
Syntax 1 (list format)
“
µ
condition”,
µ
0
value, List, Freq (or 1)
* “Freq” can be omitted. Doing so sets “1” for “Freq”.
Syntax 2 (parameter format)
“
µ
condition”,
µ
0
value,
o
value,
x
σ
n
–1
value,
n
value
Definition of Terms
µ
condition :
population mean value test conditions (“
≠
” specifies two-tail test,
“<” specifies lower one-tail test, “>” specifies upper one-tail test.)
µ
0
:
assumed population mean
List
:
data list
Freq
:
frequency (1 or list name)
o
:
mean of sample data
x
σ
n
-1
:
sample standard deviation (
x
σ
n
-1
> 0)
n
:
sample size (positive integer)
Input Example:
Syntax 1 (list format)
OneSampleTTest “
≠
”,11.3,list1,1
Syntax 2 (parameter format)
OneSampleTTest “
≠
”,11.3,11.52,0.62,5
Calculation Result Output
µ
≠
11.3 :
test condition
t
:
t
value
p
:
p
-value
o
:
mean of sample data
x
σ
n
–1
:
sample standard deviation
n
:
sample size
