Math 140 Stats Teachout Final Exam Study Guide questions and correct answers

Math 140 Stats Teachout Final Exam Study Guide questions and correct answers population - answer-collection of all people or objects you want to study census - answer-collecting data from every person or object in the population sample - answer-collecting data from a subgroup of the population random - answer-everyone in the population has an equal chance to be in the data convenience sampling - answer-asking friends and family (or asking whoever is most convenient to ask) for sample data voluntary response - answer-putting a survey out into the world and allowing anyone to fill it out simple random sample - answer-picking individual people or objects randomly, usually with a random number generator cluster sample - answer-collecting data from groups of people in a population instead of one at a time: selecting classes and getting data from everyone in those classes stratified sample - answer-comparing two or more populations by collecting sample data from each population and comparing them (ex: comparing a sample of women to a sample of men) systematic sample - answer-getting data from every 20th person on a list or every 5th person that comes into a store bias - answer-when a data set does NOT represent the population sampling bias - answer-not using randomization when you collect a sample