16
u
u
u
u
u
1-Sample
t
Test
This test uses the hypothesis test for a single unknown population mean when the popula-
tion standard deviation is unknown. The
1-Sample
t
Test
is applied to t-distribution.
t
=
o
–
0
µ
"
x
n
–
1
n
o
: mean of sample
µ
0
: assumed population mean
x
"
n
-1
: sample standard deviation
n
: size of sample
Perform the following key operation from the statistical data list.
3
(TEST)
c
(T)
b
(1-Smpl)
The following shows the meaning of each item in the case of list data specification.
Data ............................ data type
µ
.................................. population mean value test conditions (
“
G
µ
0
”
specifies two-
tail test,
“
<
µ
0
”
specifies lower one-tail test,
“
>
µ
0
”
specifies
upper one-tail test.)
µ
0
................................. assumed population mean
List .............................. list whose contents you want to use as data
Freq ............................. frequency
Save Res .................... list for storage of calculation results (None or List 1 to 20)
Execute ....................... executes a calculation or draws a graph
The following shows the meaning of parameter data specification items that are different
from list data specification.
o
.................................. mean of sample
x
"
n
-1
............................. sample standard deviation (
x
"
n
-1
> 0)
n
.................................. size of sample (positive integer)
After setting all the parameters, align the cursor with [Execute] and then press one of the
function keys shown below to perform the calculation or draw the graph.
•
1
(CALC) ... Performs the calculation.
•
6
(DRAW) ... Draws the graph.
