How to compare a constant variable against independent variable.?

I have constant variables such as male, female, non smoker and smoker.


how do compare each of these grouped factors with a independent variable abdominal diameter cm.


I have calculated mean, sd and range but how to I calculate there significance.How to compare a constant variable against independent variable.?
A ven diagram should help show significanceHow to compare a constant variable against independent variable.?
How can something be ';constant'; and ';variable'; at the same time?





Maybe what you have are independent and dependent variable. The abdominal diameter depends on whether the subject is male/female, smoker/nonsmoker. So the diameter is the dependent variable, and the sex (or smoking) is the independent variable.





Testing for significance is tricky; you can read about it in books and on the web.