Computing the Chi Square Test of Independence (2 of 5)

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The calculations are shown below.



Once the expected cell frequencies are computed, it is convenient to enter them into the original table as shown below. The expected frequencies are in parentheses.

 
Graduated
Failed to
Graduate
Total
Experimental
73
(59.042)
12
(25.958)
85
Control
43
(56.958)
39
(25.042)
82
Total
116
51
167

The formula for chi square test for independence is



For this example,



χ² = 22.01.
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