POL SCI 3 Lecture Notes - Lecture 4: Standard Deviation, Covariance, Central Tendency
4 Sep 2016
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1: more abstract 6: more concrete (1) research question: ex. How does parent pid affect child pid (2) theory: ex. Political socialization theory: young people, at least in the beginning, vote the way their parents identify politically (3) hypothesis: ex. If parent is democrat, the child will be a democrat. (4) data: small n interview families, large n look at individual pid over time, compare to parents c. Issues of sampling and measurement (5) analyze: large n: run time series regressions (6) interpret, visualize with graphs, link findings to hypothesis and theory. Consuming research: start from step 6 and travel toward 1. Mean (central tendency of distribution: 50/50 division. Median (central tendency of distribution: shows whether it is a symmetric distribution, quartiles: percentiles (25th, 75th, 99th percentiles, sometimes median better than mean (ex. Variance: how much the data is spread: standard deviation. How we display the data tells us different things. Shows the number of repetitions of a certain normal.
