3. (Interpretation of Simple Linear Regression Model) Suppose we collect data on 230 mothers' number of...
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3. (Interpretation of Simple Linear Regression Model) Suppose we collect data on 230 mothers' number of cigarettes they have per day during pregnancy and the birth weight of their child (in grams). Suppose now that you run a regression of the birth weight (W.) on the number of cigarettes (C.) and find that W. = 3396 – 15C, + û.. (a) Thinking about the model in a descriptive manner. Explain what it means that the slope coefficient is -15. (b) Thinking about the model in a causal manner. Explain what it means that the slope coefficient is -15. (c) Do you think the causal interpretation is valid? 3. (Interpretation of Simple Linear Regression Model) Suppose we collect data on 230 mothers' number of cigarettes they have per day during pregnancy and the birth weight of their child (in grams). Suppose now that you run a regression of the birth weight (W.) on the number of cigarettes (C.) and find that W. = 3396 – 15C, + û.. (a) Thinking about the model in a descriptive manner. Explain what it means that the slope coefficient is -15. (b) Thinking about the model in a causal manner. Explain what it means that the slope coefficient is -15. (c) Do you think the causal interpretation is valid?
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Given data Interprietation of smple Lineare No del Suppore we calleet data on a30 mothens numbere of ... View the full answer
Related Book For
Business Statistics in Practice
ISBN: 978-0077404741
6th edition
Authors: Bruce Bowerman, Richard O'Connell
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