Stat 503 quiz 1 - Study guides, Class notes & Summaries

STAT 503 Quiz 1 Questions and Answers Graded A+ Randomization - Answer-allows an experiment to establish a cause-and-effect relationship; under random assignment the groups shouldn't differ significantly with respect to potential confounding variables; randomization of treatments establish a clearer causal relationship and controls for all lurking variables as well as helps to rid bias frequency - Answer-the count of occurrences frequency distribution - Answer-describes the number of tim...

____________ is an inherent component of all living systems - ANSWER-Variation Variation + incomplete info = __________ - ANSWER-Uncertainty ____________ is the process of inferring an unknown quantity of a population using sample data - ANSWER-Estimation What is the only way to avoid sampling error? - ANSWER-Census When do we consider a result to be repeatable? - ANSWER-If the variation among the replicates of the study is too small to change our basic interpretation of those result...