N6208 ASSIGNMENT 2
Chapter 8: Chi-Square
I. Given each of the following situations, determine whether the calculated values of chi-square
are statistically significant:
a) Χ2 = 3.72, df = 1, α = .05
The Chi-square tabulated value is 3.84.(from the chi-square table)
Chi-square Computed (3.72)< Chi-square Tabulated (3.84)
This implies that the chi-square value is not statistically significant at α = .05
b) Χ2 = 9.59, df = 4, α = .05
The Chi-square tabulated value is 9.49.(from the chi-square table)
Chi-square Computed (9.59)> Chi-square Tabulated (9.49)
This implies that the chi-square value is statistically significant at α = .05
c) Χ2 = 10.67, df = 3, α = .01
The Chi-square tabulated value is 11.34(from the chi-square table)
Chi-square Computed (10.67)< Chi-square Tabulated (11.34)
This implies that the chi-square value is not statistically significant at α = .01
d) Χ2 = 9.88, df = 2, α = .01
The Chi-square tabulated value is 9.21.(from the chi-square table)
Chi-square Computed (9.88)> Chi-square Tabulated (9.21)
According to Berenson, Timothy & David (2005),this implies that the chi-square value is
statistically significant at α = .01
II. Using the information provided, indicate which test you think should be used for each of the
following situations:
1) Independent variable: Infertility treatment A vs. infertility treatment B vs. control
condition; dependent variable: did vs. did not become pregnant; sample size: 180.
Chi-square test for independence
2) Independent variable: Drug A vs. Drug B vs. placebo; dependent variable: pain
measured on a 0 to 10 scale; sample size: 50 per group.
Analysis of Variance
3) Independent variable: gender (male versus female); dependent variable: preference
for nursing home placement versus home care for parent.
Chi-square test

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N6208 Calculated Values of Chi Square

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