Every 10 years, the federal government sponsors a national survey of health and health practices (NHANES). One question in the survey asks participants to rate their overall health using a 5-point rating scale. What is the scale of measurement used for this question?
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Since the options are not given, I am giving an assumed answer.
The correct answer is - Ordinal scale.
An Ordinal scale of measurement allows sorting of data according to their rank order. Although it does not give a difference or a relative degree in between the survey results, it just ranks the data and the measured opinions.
Usually, dichotomous data are included in which 2 factors are used as parameters to conduct the survey like - Sick or Healthy, Hygenic or Unhygienic, etc. However, sometimes, non-dichotomous data is also used in which many spectral values are opinionated.
The correct answer is - Ordinal scale.
An Ordinal scale of measurement allows sorting of data according to their rank order. Although it does not give a difference or a relative degree in between the survey results, it just ranks the data and the measured opinions.
Usually, dichotomous data are included in which 2 factors are used as parameters to conduct the survey like - Sick or Healthy, Hygenic or Unhygienic, etc. However, sometimes, non-dichotomous data is also used in which many spectral values are opinionated.
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The 5-point health scale referenced here, likely containing values of "very poor", "somewhat poor", "neutral", "somewhat good", and "very good" to allow respondents to indicate their own perceived level of health would be representative of a Likert scale, a prototypical survey tool which is used across many areas of the social sciences for data collection.
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