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Scenario 1: To describe the instructors’ experience, the researcher records the year in which each instructor...

Scenario 1: To describe the instructors’ experience, the researcher records the year in which each instructor began teaching online: 2007, 2011, and 2016.

1. What are the cases in this study? Explain

  1. What is the type of the variable that describes each instructor’s experience in this scenario (categorical ordinal, categorical nominal, quantitative interval, quantitative ratio)? Explain.
  2. What are the values of this variable?

Scenario 5: Each student earns a letter grade.

1. What are the cases in this study? Explain

2. What is the type of the variable grade? Explain.

3. List some possible values of this variable.

Math   Statistics-And-Probability   
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Answer #1

Scen 1 : 1. Cases are instructors because they are the ones w.r.t. to whom data is collected.

Year is Interval type of variable because differences are well defined. It is not ratio because origin can be arbitrary.   Values are 2007,2011,2016.

Scen 2: 1. Cases are students because data is collected on them. 2. Grade is "Ordinal" type of variable because it denotes ordering among the students. 3. Example values : A, B, C etc.

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