In a regression using standardized data, to predict health symptoms from stress, the beta = .5. This means that for every 1 point increase in stress there is half a point increase in symptoms.

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This is the definition of beta in regression - it represents the change in the dependent variable (health symptoms) for every one-unit increase in the independent variable (stress), when both variables are measured in standardized units (i.e., one standard deviation). In this case, the beta coefficient of .5 means that for every one standard deviation increase in stress, we expect to see a 0.5 standard deviation increase in health symptoms.

In a Regression Using Standardized Data, to Predict Health Symptoms