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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
σ
x
n–1
n
o : mean of sample
µ
0 : assumed population mean
x
σ
n-1 : sample standard deviation
n : size of sample
Perform the following key operations from the statistical data list.
3(TEST)
2(t)
1(1-S)
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 (List 1 to 26)
Freq............................. frequency (1 or List 1 to 26)
Save Res .................... list for storage of calculation results (None or List 1 to 26)
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
σ
n-1 ............................. sample standard deviation (x
σ
n-1 > 0)
n .................................. size of sample (positive integer)
After setting all the parameters, use c to move the highlighting to “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.
6-5-11
Tests