The beta coefficient in a multiple regression equation indicates:

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The question asks about what the beta coefficient in a multiple regression equation represents.
Option 1: 'The expected change in the dependent variable for a one-unit change in the independent variable, holding all other variables constant.' This aligns with the interpretation of a standardized or unstandardized beta coefficient in multiple regression: it measures the unique effect of a predictor when other predictors are controlled for, representing the slope associated with that predictor.
Option 2: 'The error term associated with the prediction.' The error term (or residual) accounts for the difference between observed and predicted values, not the effect size of a predictor.
Option 3: 'The observed power of the analysis.' Power relates to the probability of detecting a true effect given sample size and effect size, not a coefficient that quantifies relationship strength.
Option 4: 'The mean of the dependent variable when all independent variables are zero.' This describes the intercept (or constant term), not the beta coefficient.
Option 5: 'The total variance in the dependent variable.' This describes the overall variability (often captured by total variance or R-squared context), not the individual predictor’s effect size as captured by beta.
In summary, among the presented choices, the one that correctly characterizes the beta coefficient is the description of the change in the dependent variable for a one-unit change in the predictor while holding other predictors constant. This centers on the magnitude and direction of each predictor’s unique contribution to the model, after accounting for the other variables.

PSY309H5 F PRA0101 PSY309 Term Test 2

The beta coefficient in a multiple regression equation indicates:

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