The __________ assumption requires that all variation around the regression line should be equal at all possible values (levels)of the independent variable.
A)normality
B)control variation
C)constant variance
D)independence

Question

Quizplus · Accepted Answer

The constant variance assumption, also known as homoscedasticity, requires that the variability of the residuals (the difference between the observed values and the predicted values) should be constant across all levels of the independent variable. Violations of this assumption can lead to biased and inefficient parameter estimates, and can affect the validity of hypothesis tests and confidence intervals.

The __________ Assumption Requires That All Variation Around the Regression