IMED2003 Final: IMED2003 Revision 58 Notes
Document Summary
It is when variables have two or more categories. But it does not have an intrinsic order. E. g. , a real estate agent can classify the types of property into. Hence, "type of property" is a nominal variable. It has 3 categories that have no intrinsic order. It is variables that are nominal but have only two categories/levels. E. g. if we ask someone a question like do you have a dog? , we can categorize the answers as either "yes" or "no". They are variables that have 2 or more categories. But the categories can be in an intrinsic order or have a rank. Eg. if you ask a person how much they agree with vaccination, they could answer: "not very much", "they are ok" or "yes, a lot" Can rank them from most positive to least positive. Although we can rank the levels, there cannot be a "value" placed to them. Types of data: categorical, nominal, dichotomous, ordinal, continuous.