Casio ClassPad 330, User Manual

Page: 431 / 954

20090601
I
t
Te s t
1-Sample
t
Te s t
Menu: [Test]-[One-Sample TTest]
De s cription: Tests a hypothesis relative to a population mean when population standard
deviation is unknown. A 1-Sample
t
Test is used for
t
distribution.
M
: sample mean
μ
0
: assumed population mean
s
x
: sample standard deviation
n
: sample size
Definition of Term s
μ condition : population mean value test conditions (“ x ” 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)
M
: sample mean
s
x
: sample standard deviation (s
x
> 0)
n
: sample size (positive integer)
Calculation Re s ult Output
μ x 11.3 : test condition
t
:
t
value
p
:
p
-value
M
: sample mean
s
x
: sample standard deviation
n
: sample size
Example 1 (calculation with list)
List : { 330, 240, 260, 390, 400, 360, 200, 180, 300 }
Assumed population mean : 250
• Stati s tic s Wizard Operation
(1) Input the data into [list1] in the Stat Editor.
(2) On the menu bar, tap [Calc] and then [Test].
(3) Select [One-Sample TTest] and [List], and then
tap [Next >>].
(4) Select the μ condition [ x ] and input μ
0
250.
(5) Select List [list1] and Freq [1].
(6) Tap [Next >>].
t
=
M
—
0
n
s
x
t
=
M
—
0
n
s
x
7-9-8
Tests