Levels of Measurement Indicate the Inferences That Can Be Drawn

question 7

Essay

Levels of measurement indicate the inferences that can be drawn when comparing one category or value of a variable with another: Do they differ? Is one ranked higher than the other? What is the numerical difference? What is the ratio of the values? Identify the four levels of measurement. Then, for each level describe the inferences that can be made when comparing units (e.g., people) who are in different variable categories.

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Definitions:

Dependent Variable

In an experiment or study, the variable that is being tested and measured, often to see the impact of variations in the independent variable.

Randomization

In an experiment involves assigning each individual by chance processes.

Control Group

In experimental research, a group of subjects that does not receive the treatment being tested, used for comparison against the group that does.

Random Sampling

A technique for selecting a sample from a population in a way that every member has an equal chance of being chosen.