Lesson 1: Collecting Data


Upon successful completion of this lesson, you will be able to:

  • Identify cases and variables in a research study
  • Classify variables as categorical or quantitative
  • Identify explanatory and response variables in a research study
  • Distinguish between a sample and a population
  • Determine whether a given sample is representative of the intended population 
  • Identify simple random sampling and convenience sampling methods
  • Use Minitab Express to draw a simple random sample from a known population
  • Identify potential non-response and response bias
  • Distinguish between experimental and observational designs
  • Identify confounding variables
  • Identify randomized experiments
  • Determine when causal conclusions (as opposed to associations) can be made
  • Classify samples as being independent or paired
  • Identify control groups, placebos, and blinding in research studies and explain why each is used

In this lesson, you will learn about how data are collected. You will be introduced to the terminology that will be used throughout the course. At the end of this lesson, there are flash cards that you can use to review these terms. You may also want to make your own flash cards by hand to review these terms throughout the semester.