Recall that the critical value for a chi-square test is the chi-square value for
ID: 3049680 • Letter: R
Question
Recall that the critical value for a chi-square test is the chi-square value for which the area to its right equals the level of significance. An observed relationship is statistically significant if the calculated chi-square statistic is greater than or equal to the critical value. Determine the critical value in each of the following situations. (Round all answers to the nearest hundredth.)
(a) Level of significance is = .5; df = 2. (b) [ ]
Level of significance is = .075; table has 4 rows and 5 columns. [ ]
Explanation / Answer
Using Excel
a) level of significance is alpha = 0.5 and df=2
=CHISQ.INV.RT(0.5,2)
= 1.3862
b) Level of significance is = .075; table has 4 rows and 5 columns.
df=(row -1 )*(Column - 1)
=(4-1)*(5-1)
=3*4
=12
alpha= 0.075
=CHISQ.INV.RT(0.075,2)
= 5.1805
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