STA 2023 Study Guide - Midterm Guide: Response Bias, Binomial Distribution, Leading Question
4 Oct 2017
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Chapter 1. 1 using data to answer statistical questions. What is statistics? the art and science from learning from data. Design plan how to obtain the data. Description summarize the data with graphs and numerical summaries. These inferences are used for: population average, population proportion, comparing two population averages, comparing two population proportions. Data sets consist of: subjects persons, animals, or objects in our study/experiment, variables the characteristics that we measure on each subject; can take on different values for each individual. Population all subjects of interest: parameters numerical summary of the population. Sample subjects for whom we have data: statistics numerical summary of the sample. Random sampling each member of the population has the same chance of being included in sample; tend to be representative of population. Margin of error measure of the expected variability from one random sample to the next (cid:2778) x 100%
