Question:I want to check p-value in chi-Square test, and this is my code in SAS.
data dataA; input Ball $ observed; datalines; A 1 B 0 C 0 D 0 E 9 ; run; proc freq data=dataA; tables Ball / chisq; weight observed; run;
Here is a problem. This Chi-square test did not include when value is 0. Actually, DF is 4, but now it’s 1.
The below calculation is what I want (Chi-square should be 31), including 0 values.
How can I include the category with 0 value so that DF becomes 4, not 1? and Chi-squared becomes 31, not 6.4?
Answer:You need to use ZEROS option on the WEIGHT statement.
proc freq data=dataA; tables Ball / chisq; weight observed / zeros; run;
If you have better answer, please add a comment about this, thank you!