Chi-Square Goodness-of-Fit using SAS


Looking at the mpg data file, let’s assume we believe that our data consist of 50% front-wheel drive car, 10% rear-wheel drive car and 40% four-wheel drive car. We want to test whether the observed proportions from our sample significantly differ from these hypothesized proportions. The hypothesized proportions are placed in parentheses after the testp= option on the tables statement. Note all my codes have been test under SAS version 9.3.

proc freq data = mpg;
  tables drv / chisq testp=(40 50 10);

SAS result chi square goodness of fit test

These results show that the composition of engine layout in our sample does not differ significantly from the hypothesized values that we supplied (p = .3521).



See Also:

Do the same test in R

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