Suggested answer to Exercise: Regression analyses, 7

Question 7: What assumptions about the variables are required for these analyses to be valid?

Suggested answer

The assumptions are that the differences between the observed systolic blood pressure and the systolic blood pressure predicted by the regression equation (residuals or deviations from the regression) follow a Normal distribution and that the variance of this distribution is uniform, i.e. unrelated to recovery index, age, race, area, and ponderal index. The relationships should be linear.

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