This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: STAT 201 Recitation Worksheet: Descriptive Statistics 1. To verify that incoming MSBA students have an up to date background in economics, a refresher exam is given to all students who enroll at MIT’s Sloan school. A random sample of 6 economics refresher exam scores yields the following results: 71 64 89 66 92 104 (a) Calculate the mean exam score. (b) Calculate the median exam score. 2. A statistics professor has just moved to the Philadelphia area and is interested in learning how much time to allow for the drive to work. For a random sample of 5 days, his driving times in minutes are as follows. 45 50 50 55 75 The sample average is = 55 minutes. Calculate the: (a) sample variance. (b) sample standard deviation. 3. In Anthropology 606 your course grade is calculated from your scores on homework, a project, and a midterm and final exam. Homework and the project are equally weighted in the calculation, the midterm counts twice as much as the project, and the final counts three times...
View Full Document
This note was uploaded on 09/26/2011 for the course STAT 201 taught by Professor Drex during the Spring '04 term at Drexel.
- Spring '04