HP 17bII+ User Manual
Page 221
14: Additional Examples 221
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
Number
1
2
3
4
5
6
Frequency Observed
25
17
15
23
24
16
Keystroke: Display:
Description:
Displays SUM menu and
current list.
@c
or
Clears current list or gets a
new one.
25
I
17
I
15
I
23
I
24
I
16
I
Enters observed values.
e
OBS
I
Names the list OBS.
e
(
use
[
and
]
if necessary )
Displays the CHI
equation. Make sure
name1
is OBS.
Displays menu.
20
Stores expected value.
Calculates χ
2
.
The number of degrees of freedom is (
n–1)＝5. Consult statistical tables
to find χ
2
to a significance level of 0.05 with 5 degrees of freedom. The
table shows that
2
0 05 5
χ
. ,
＝11.07. Since the computed value (5.00) is less
than 11.07, you can conclude that, to a 0.05 significance level (95%
probability), the die is fair.