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20010101
kk
kk
k χ
2
Test
χ
2
Test sets up a number of independent groups and tests hypothesis related to the
proportion of the sample included in each group. The χ
2
Test is applied to dichotomous
variables (variable with two possible values, such as yes/no).
Expected counts
F
ij
=
Σ
x
ij
i=1
k
×
Σ
x
ij
j=1
k
ΣΣ
i=1
j=1
x
ij
χ
2
=
ΣΣ
F
ij
i=1
k
(x
ij
– F
ij
)
2
j
=1
Perform the following key operations from the statistical data list.
3(TEST)
d(χ
2
)
Next, specify the matrix that contains the data. The following shows the meaning of the
above item.
Observed .................... name of matrix (A to Z) that contains observed counts (all cells
positive integers)
Expected ..................... name of matrix (A to Z) that is for saving expected frequency
Save Res ..................... list for storage of calculation results (None or List 1 to 20)
Execute ....................... executes a calculation or draws a graph
# The matrix must be at least two lines by two
columns. An error occurs if the matrix has
only one line or one column.
1-2-18
Tests (TEST)
20011101
#Pressing 2 ('MAT) while setting
parameters enters the MATRIX editor, which
you can use to edit and view the contents of
matrices.