Exercise:
A relation between age (less than 60 year-old or 60 year-old and more) and season (spring, summer, fall, or winter) in a certain disease onset was investigated. Analyze whether there is a significant relation between disease onset, age, and season.
Comparative Verification Test
Chi-square test: StaFinale, 0.00761; SPSS, 0.008; EZR, 0.00761.
G test: StaFinale, 0.00697. Formula in StatFinale: P-value= CHIDIST(chi-square value,DF)
Likelihood ratio test: SPSS, 0.006. Formula in StatFinale: P-value=CHIDIST(G-value,DF)= 0.006363
Try it for yourself.
Reports of SPSS & EZR
About G test: In recent years, many statisticians have concluded that the chi-square procedure is preferable to G (JH Zar).
SPSS and EZR do not have the tabular format for data entry that Statfinale uses.
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