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26 August, 20:30

Which of the following is not a condition required for the regression procedure used in the exercises above to be statistically valid? Select all that apply.

A. The true errors must be normally-distributed.

B. The explanatory variable must be normally-distributed

C. The true relationship between the response and explanatory variables must be linear

D. The size of the sample must be sufficiently large, i. e., greater than n = 25

E. The response variable must be normally-distributed.

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  1. 26 August, 21:53
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    Answer: A, E, B, and C

    Step-by-step explanation:

    A regression procedure require all of the following

    1. Linearity: The relationship between X and the mean of Y must always be linear. C fulfills this condition

    2. Homoscedasticity: Sometimes known as the homogeneity of avariance is always same for any given value of X. A also fulfills this condition.

    3. Normality: A fixed values of X, and Y is always normally distributed. B and E fulfills this condition.
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