Identify the independent and dependent variables for this study. The independent variable is the ratio of students to faculty using the stairs, and the dependent variable is the length of time the signs were posted. The independent variable is whether the motivational signs were posted, and the dependent variable is the amount of use of the stairs. The independent variable is the amount of use of the stairs, and the dependent variable is whether the motivational signs were posted. The independent variable is the time when the motivational signs were posted, and the dependent variable is the amount of use of the stairs. What scale of measurement is used for the independent variable

Independent variable: In research methods, the term "independent variable" is described as the variable that is being altered, manipulated, or changed by an investigator to see its effects on the dependent variable in specific research or experiment.

Dependent variable: In research methods, the term "dependent variable" is described as the variable that is being measured, analysed, or tested in an experiment by the experimenter or researcher. The dependent variable is being directly affected by the independent variable.

Nominal scale: In research methods, the term "nominal scale" is determined as one the different measurement scales in which a specific number is being served as labels or tags only and to classify and identify an object.