glass
pen
clip
papers
heaphones

Systematic Measurement Error Discussion

Systematic Measurement Error Discussion

Description

  1. Explain the difference between systematic measurement error (bias) and random measurement error (Noise).
  2. Explain the difference between reliability and validity.
  3. A mass transit agency is considering two proposed methods for rating the cleanliness of its trains. One proposal is to have raters count the number of pieces of trash in the centermost car of each train as it arrives at the end of the line on Wednesday evenings at 8. Another proposal is to have observers ride the trains several different times a week, at different locations, and describe the trains’ cleanliness in a written report using their own words. Which measure is more reliable? Which measure is more valid?
  4. Consider two tests that could be used to evaluate a university’s effectiveness at teaching critical thinking and communication skills to undergraduates. The first test is a multiple-choice test with questions on reading comprehension, language, and math, similar to the SAT in the United States. The second test provides the students with a single real-world case involving practical issues and data, including quantitative data, from several sources. The product that students produce for the second test is a memo, which must suggest a particular response to the case and support the decision with evidence and analysis. The second test is graded using specific criteria on critical thinking and communication (a rubric).Discuss the validity of each test for assessing the level of critical thinking and communication skills of students. Compare and contrast the two tests in terms of validity.Discuss the reliability of each test for assessing the level of critical thinking and communication skills of students. Compare and contrast the two tests in terms of reliability.
  5. Interpret “Table 1. Correlations between variables” on page 81 of the case, “545 Article for Assignment.” (*This article starts at page 74! So, there will be page 81!). (attched below)
  6. What will be systematic measurement errors and random measurement errors in researches on job satisfaction?
  7. Give three examples of questions and their nominal measurements for researches on job satisfaction.
  8. Give three examples of questions and their ordinal measurement for researches on job satisfaction.
  9. Explain the dummy variable. Then, give five examples of dummy variables in researches of job satisfaction.