Psychology 2320A/B Study Guide - Birth Weight
11 Jun 2014
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Instructions: you have 1 hour to complete the exam, check that your exam contains 4 questions, 1 page of regression output, and tables for the t- and f-statistics. Show your work clearly to be awarded possible partial credit. Explanations should be concise (about 1-3 sentences): you may have pencils, erasers, pens, your student id, and a non-programable, non-graphing calculator available to complete the exam. All other items must be stored in your bag and off your desk: turn-off all electronic devices before storing them in your bag, when you have finished hand in all exam materials, including scrap paper. Suppose we are interested in learning about the relationship between an infant"s birth weight in ounces ( bwght. We estimate the following simple model using data on n=1388 births bw ght =119. 77 !0. 514*cigs. State the conditions under which ols (ordinary least squares) regression produces unbiased and efficient estimates and we can conduct valid inference with simple t- and f-statistics.
