Texas Instruments TI-83 Plus Manual page 72

After MATRIX [A] type in 2 x2.
The 2 represents the number of rows in the table.
The 2 represents the number of columns in the table.
Press the ENTER key.
Enter the data values into the matrix as they appear in
the table.
Press the STAT key.
Press the ► key twice to get to TESTS.
Press the ALPHA key and then the PRGM key
to get to C: X2-Test...
The X2-Test output shows:
That the observed values are in matrix A
That the expected values are in matrix B
Move the cursor to Calculate and press the ENTER key.
2
This X -Test output show the:
2
Test statistic: X =21.44552843
P-value: P=3.6402395E
Degrees of freedom: df=1
Since the p-value is less than the significance level of .01 we reject the null hypothesis that row
and column variables are independent. We have evidence that gender does influence cell phone
ownership.
The see the expected frequencies
nd
Press the 2 key and then the x
Press the ► key twice to get to EDIT.
Press the number 2 key to get to [B].
Comparisons such as 640 men owned cell phones can be compare to 588.6 that we expected
gives evidence that gender does influence cell phone ownership.
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6
-1
key.
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