SOCECOL 13 Lecture Notes - Lecture 2: Statistical Inference, Capsaicin, Randomized Experiment
29 Sep 2016
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Document Summary
Takes a broad number of things and narrows it down. Goes from single item and reconstructs it into a bigger complicated items. Slices of the real world squeezed into little capsules. The very first thing to ask about a statistical study is: The last thing to ask about a statistical study is: <> simple measurements don"t exist. In evaluating a statistical claim, understand exactly how the information was collected. Categorical variables: those you can place into a category. Categorical variables whose categories have a natural ordering are called ordinal. Categorical variables whose categories do not have a natural ordering are called nominal. Measurement variables: those for which we can record a numerical value and then order respondents according to those values also called quantitative variables. Ex) average number of births a woman has in a lifetime. Continuous (can be infinitely subdivided, amount of something ) Valid measurement: actually measures what it claims to measure.
