The Wizard Setting Fields Multiple Variables Graphing Data Types Data Analysis begins with an understanding of what the components of data are.
Scientific data is found in the form of variables .
Examples of these include variables such as income, age, years of education, etc. In each case we do a numerical measurement, and we can do meaningful comparisons. If one person has a higher number for their income than another, we can say that the first person is richer. This kind of comparison makes sense when dealing with quantitative variables. It sorts people into categories.