MATH 534 Week 1 Addendum Homework-Quiz Review

Week 1 Addendum: Homework/Quiz Review 1. Is each item below an example of descriptive or inferential statistics?  Take a sample of cars and test them to determine how many miles per gallon (mpg) they give. Use this sample to estimate the mpg of all cars. Answer: Inferential  To get an idea of student performance on a test, analyze the data in the gradebook about the test. Answer: Descriptive 2. In each case, identify the type of data (or level of data):  The dollar sales at the local pizza shop each month - Ratio  An employee’s identification number - Nominal  Rating of how satisfied you are with your professor. Possible values are: "very dissatisfied," "somewhat dissatisfied," "somewhat satisfied," or "very satisfied." - ordinal  Amount you have won/lost when gambling in Atlantic City (in dollars) - Interval  Color of a car - nomina