Archaeology: Tree Rings At Burnt Mesa Pueblo, the method of tree ring dating gave the following years A.D. for an archaeological excavation site (Bandelier Archaeological Excavation Project: Summer 1990 Excavations at Burnt Mesa Pueblo, edited by Kohler, Washington State University): 1189 1271 1267 1272 1268 1316 1275 1317 1275 (a) Use a calculator with mean and standard deviation keys to verify that the sample mean year is 1272, with sample standard deviation s 37 years. (b) Find a 90% confidence interval for the mean of all tree ring dates from this archaeological site

Lecture 2: Turning Data into information - “Simple summaries of data can tell an interesting story and are easier to digest than long lists.” 2.1 Raw Data - Raw data correspond to numbers and category labels that have been collected or measured but have not yet been processed in any way. Definition: - A variable is a characteristic that differs from one individual to the next. - Sample data are collected from a subset of a larger population. - Population