What Is Meant by "Controlling" for a Third Variable in a Multivariate

question 12

Essay

What is meant by "controlling" for a third variable in a multivariate analysis?

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Definitions:

Random Cause Variation

Variability in data or processes that is caused by numerous uncontrollable factors, observed in a natural, random spread of results.

Centerline

In the context of statistical process control charts, this is the median line around which the plotted values are expected to vary.

Random Variation

The natural fluctuation in data or process outcomes, occurring without a specific, predictable cause.

Sample Proportion

The ratio of the number of times an event occurs to the total number of observations or trials in the sample.