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2
GOF Te t
Menu:
[Test]-[
De cription: This command tests whether the frequency of sample data fits a certain
distribution. For example, it can be used to determine conformance with
normal distribution or binomial distribution.
k
k
2
2
=
=
i
i
Contrib =
Contrib =
Definition of Term
Observed list : name of list containing observed counts (all cells positive integers)
Expected list : name of list that is for saving expected frequency
df :
Calculation Re ult Output
2
:
p :
df :
Contrib :
Example
list1 = {1,2,3}, list2 = {4,5,6}, df = 1
• Stati tic Wizard Operation
(1)
(2) Input the list1 and list2.
(3)
(4) On the menu bar, tap [Calc] and then [Test].
2
(5) Select [
GOF Test] and then tap [Next >>].
(6) Select List(1) [list1], List(2) [list2] and input df 1.
(7) Tap [Next >>].
(8) To display the graph, tap
Program, eActivity or Main Application
Command: ChiGOFTest
Command Syntax
Observed list, Expected list, df
Input Example:
ChiGOFTest list1, list2, 1
Tip
• The calculation results
" prob ", " df ", and "Contrib" respectively.
7-9-15
Tests
2
GOF Test]
2
2
( O
( O
− E
− E
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)
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( O
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O
: The i -th element of the observed list
i
E
: The i -th element of the expected list
i
degrees of freedom
2
value
p -value
degrees of freedom
name of list specifying the contribution of each observed count
.
2
, p , df , and Contrib are stored in the system variables named "
20090601
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)
( O
( O
− E
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k
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...
...
E
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value",
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