STA 381 Exam 1 Review Test With Verified Correct Complete Solutions.

Retrospective Study - correct answer A retrospective study gathers historical data through records. The outcomes have already occurred before the study Observational Study - correct answer A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome. Designed Experiment - correct answer In a controlled experiment, we assign subjects to groups and apply some treatment to one of the groups, while the other does not receive the treatment. Random Experiment - correct answer Carried out under controlled conditions and executed to discover an unknown result Discrete - correct answer Consists of a finite or countable infinite set of outcomes(whole numbers is countable) Continuous - correct answer Contains an interval (either finite or infinite) of real numbers, can be more refined Discrete or Continuous How many siblings do you have? - correct answer Discrete Discrete or Continuous How much did you weight at birth? - correct answer Continuous Discrete or Continuous How long does it take you to get to campus each day? - correct answer Continuous Discrete or Continuous How many times do you exercise each week? - correct answer Discrete Discrete or Continuous How many classes are you taking? - correct answer Discrete Discrete or Continuous How many car accidents have you been in? - correct answer Discrete