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Describe the nominal level of measurement. In your response, explain what type of variables it is used for, how scores function at this level, and identify the only measure of central tendency that can be used with nominal data.
Question: Describe the nominal level of measurement. In your response, explain what type of variables it is used for, how scores function at this level, and identify the only measure of central tendency that can be used with nominal data.
Sample answer: The nominal level of measurement is the lowest level of measurement and is used for categorical variables. At this level, scores function simply as category labels that communicate whether two individuals are the same or different on the measured variable, without implying any inherent order or ranking. The only measure of central tendency that can be calculated for nominal data is the mode.
Key points:
- Used for categorical variables.
- Scores act as category labels indicating if individuals are the same or different.
- Does not imply any inherent order or ranking among categories.
- The mode is the only available measure of central tendency.
Rubric: The response should explicitly state that nominal measurement is for categorical variables, that scores act as category labels indicating sameness or difference without inherent order, and that the mode is the only applicable measure of central tendency.
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Research Methods in Psychology - 4th American Edition @ KPU
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