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Statistics and Statistical Programming (Winter 2017)/Problem Set: Week 1
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=== Empirical Paper === Hopefully many of you will have read this paper already. It's probably the most highly cited (and publicly discussed) paper to come out of communication over the last few years: :Kramer, Adam D. I., Jamie E. Guillory, and Jeffrey T. Hancock. 2014. “Experimental Evidence of Massive-Scale Emotional Contagion through Social Networks.” ''Proceedings of the National Academy of Sciences'' 111(24):8788–90. [[http://www.pnas.org/content/111/24/8788.full Available through UW libraries]] Although there are major ethical concerns with the paper, and we'll be coming back and talking about it a number of times this quarter, let's focus on the key issues of research design and the substantive takeaway. For this paper, answer each of these questions and be ready to cite parts of the paper that support each claim: :'''Q6.''' Identify (a) the cases, (b) the variables and their types, and (c) the main research question of this piece. :'''Q7.''' (a) What do the treatment and control groups consist of in this study? (b) What type of sampling does the study use? (c) Describe the experimental manipulation. :'''Q8.''' Identify (a) the population of interest and (b) the sample used in the study. (c) Do you think that this study can be generalized from the sample to the population? :'''Q9.''' There is one figure in the paper (Figure 1). Walk us through the figure and explain what it represents and reflects. :'''Q10.''' (a) Summarize the results of the study. (b) What is the size of the effect? Is this meaningful? (c) Describe what you think the important takeaway from the paper is.
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