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Weekly Commodity Prices for Heating Oil (In Cents) Were Obtained

Question 30

Multiple Choice

Weekly commodity prices for heating oil (in cents) were obtained and regressed
Against time. The residual plots from fitting the linear model are shown below. Which
Assumptions appear to be violated? Weekly commodity prices for heating oil (in cents) were obtained and regressed Against time. The residual plots from fitting the linear model are shown below. Which Assumptions appear to be violated? A) Linearity B) Normality C) Equal Variance D) Both A and B E) All of the above


A) Linearity
B) Normality
C) Equal Variance
D) Both A and B
E) All of the above

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