Which of the following is NOT possible assumption for carrying out linear regression? A. Linearity B. Normality of errors C. Inequality of variance D. Independence of error
Question
Which of the following is NOT possible assumption for carrying out linear regression?
A. Linearity
B. Normality of errors
C. Inequality of variance
D. Independence of error
Solution
The assumption that is NOT possible for carrying out linear regression is C. Inequality of variance. This is because one of the key assumptions of linear regression is homoscedasticity, which means having equal variances. If the variances are unequal (heteroscedasticity), it violates the assumption of linear regression.
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