Nominal Ordinal Interval Ratio Statistics Definition
1 st level of measurement nominal scale also called the categorical variable scale is defined as a scale used for labeling variables into distinct classifications and doesn t involve a quantitative value or order.
Nominal ordinal interval ratio statistics definition. The four levels of measurement in research and statistics. In the 1940s stanley smith stevens introduced four scales of measurement. Data with degrees of difference like time b c. Depending on the measurements there are four different types of data that can be achieved.
Rank order 1st 2nd 3rd dichotomous data that has two choices like true false or guilty innocent and non dichotomous data with choices like completely agree somewhat agree neutral and disagree. Knowing the scale of measurement for a variable is an important aspect in choosing the right statistical analysis. Nominal ordinal interval and ratio. These are still widely used today as a way to describe the characteristics of a variable.
The interval scale sometimes called scaled variable. These different variances of data vary in complexity of obtaining.