184x Filetype PPTX File size 0.52 MB Source: www2.stat.duke.edu
Announcements • Textbooks are here! • My office hours: (Old Chemistry 216) – Wednesday 3-5 pm – Friday 1-3pm • Lecture slides, assignments, labs, etc. will be posted at http://stat.duke.edu/courses/Spring12/sta101.2/ • Complete lecture slides to be posted after each class The Big Picture Population Sampling Sample Statistical Inference Exploratory Data Analysis Class Survey Data Data from both STAT 101 classes and STAT 10 Data • In order to make sense of this data, we need ways to summarize and visualize it • Summarizing and visualizing variables and relationships between two variables is often known as exploratory data analysis (also known as descriptive statistics) • Type of summary statistics and visualization methods depend on the type of variable(s) being analyzed (categorical or quantitative) One Categorical Variable • Display the number or proportion of cases that fall in each category “What is your favorite day of the week?”
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