1. Which of these X-Y relationships can be modeled as a simple linear regression model (e.g., with PROC REG in SAS)?   a. A and B   b. A and D   c. A only   d. Any of these   For which of these sets of data would a simple linear regression model be appropriate?   a. A and B   b. A and D   c. A only   d. Any of these

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A: From the above data

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