169
Chapter 8: Statistics & Regression Calculations
02 Ftest2samp Two samples data are tested for equality of standard deviation
s
1
and
s
2
.
Example
Test when population standard deviation
s
1
<
s
2
,
n
1
= 20,
standard deviation sx
1
= 5.6,
n
2
= 50, and
standard deviation sx
2
= 6.2
1. Press
#
S
E
1
7
E
.
2. Press
S
E
0
2
.
The parameter input screen
will appear.
3. Press
'
E
}
to
select
s
1
<
s
2
.
4. Enter the values into the
parameter fields.
5.6
E
20
E
6.2
E
50
E
.
5. Press
@
h
to
execute the test.
F: Statistics
p: Probability
03 Ttest1samp Tests the hypothesis of population mean
µ
.
Example
Test the population mean
µ
0
= 65 with the sample data of
{65.6, 62.8, 66.0, 64.5, 65.1, 65.3, 63.8, 64.2, 63.5, 64.4},
from a given population
(alternate hypothesis of
µ
<
µ
0
)
1. Enter the above statistical data into L1.
Press
S
E
1
6
E
to set the list input
mode.
2. Press
S
E
0
3
.
The parameter input screen will appear.
Set the input
method to value
input mode