Random Assignment in Research: Definition and Importance


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Which of the following best explains why it is important to use random selection?

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1. Anna uses a random number generator to decide which treatment to administer to each of her subjects. Which of the following is Anna demonstrating?

2. Carrie is studying which teaching method is best. She chooses classrooms to use in her study by drawing names out of a hat. But when she assigns method to each of the classes, she makes the decision in a non-random way. Which of the following best describes Carrie's actions?

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About This Quiz & Worksheet

There are two main ways that researchers can randomize their studies. This quiz/worksheet will test your knowledge of those ways as well as your understanding of their application in hypothetical examples.

Quiz & Worksheet Goals

In these assessments you'll be tested on:

  • Identifying the research strategy that allots subjects to groups in a random manner
  • Naming the type of research technique that involves choosing subjects for research in a random manner
  • Recognizing the two types of research randomization approaches in examples

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the related lesson on the importance of randomizing research
  • Critical thinking - apply relevant concepts of random assignment and selection to examine information about research in a different light
  • Distinguishing differences - compare and contrast topics from the lesson, such as the research approach that randomly assigns and the one that randomly selects
  • Knowledge application - use your knowledge of randomization techniques to answer questions about real-world examples of research

Additional Learning

To learn more about randomization in research, check out the corresponding lesson titled Random Assignment in Research: Definition and Importance. This lesson will help you:

  • Define randomization
  • Understand how randomization works
  • Identify the two types of randomization
  • Differentiate between random assignment and random selection
  • Recognize the application of random assignment and selection in an example and the importance of their possible outcomes