Objectives and pitfalls of statistical studies. Structure of data sets, histograms, means, and standard deviations. Correlation and regression. Probability, binomial and normal. Interpretation of estimates, confidence intervals, and significance tests. (Students may receive credit for only one of STAT 220, STAT 221, STAT 311, and ECON 311.) Offered: AWSpS.
Statistics is a science concerned with collection and analysis of data. Statistical procedures are being applied not only by statisticians but also by scientists and professionals with training in other areas. Statistical methods and procedures are based on statistical concepts that govern the correct selection of the methods and the interpretation of the results. The course will discuss, in a nonmathematical way, the most important concepts and techniques of statistics from the point of view of applications of statistical methods.
Student learning goals
General method of instruction
The lectures will follow the text (Freedman, Pisani, Purves, Statistics, 3rd Edition, Norton) closely. Brief summaries of the material covered will be posted on the class website. Weekly homework assignments will help students to study the material covered and weekly quizzes will be used to check progress.
The class will require students to critically apply statistical methods and critically interpret results of applications of statistical methods. Critical thinking when selecting methods and when interpreting results on the one hand, and precise application of the methods on the other hand, will be equally important to be successful. Come to the classes regularly, do the assignments every week, ask questions, do not leave your questions unanswered.
Class assignments and grading
Grades will be a weighted average of the results of the homeworks (three worst or missed dropped,10%), quizzes (two worst or missed dropped, 20%), midterm (25%) and final (45%).