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Based on your understanding of the nominal level of measurement, explain why the research assistant's interpretation is incorrect.
Case context: Dr. Patel is conducting a survey on college students' living arrangements. She categorizes responses into three groups: 1 = On-campus dorms, 2 = Off-campus apartments, and 3 = Living with family. A research assistant suggests that because "Living with family" is assigned a 3 and "On-campus dorms" is assigned a 1, living with family represents a higher amount of the variable than living in dorms.
Question: Based on your understanding of the nominal level of measurement, explain why the research assistant's interpretation is incorrect.
Sample answer: The research assistant is incorrect because the living arrangement variable represents a nominal level of measurement. In nominal measurement, the numbers 1, 2, and 3 function merely as category labels to distinguish whether individuals' living situations are the same or different. These assigned scores do not imply any inherent order, ranking, or quantitative value, so a score of 3 does not represent "more" or a "higher amount" of anything compared to a score of 1.
Key points:
- The variable represents the nominal level of measurement.
- The numbers assigned (1, 2, 3) function only as category labels.
- Nominal categories do not imply any inherent order, ranking, or magnitude.
- A higher number simply indicates a different category, not a higher amount of the variable.
Rubric: The response must identify the variable as nominal and explain that at the nominal level, numbers are just category labels without any inherent order or magnitude.
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Research Methods in Psychology - 4th American Edition @ KPU
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