A study was conducted to evaluate shivering in the postoperative patient. The study measures subjects' weight in pounds and temperature in centigrade degrees
What should the reader consider about the level of measurement of these two parameters? 1. Temperature is measured at ratio level.
2. Weight is measured at the ratio level.
3. Both of these measurements are at interval level.
4. Additional information is needed before any determination of level of measurement can be made.
2
Rationale 1: Temperature is measured at interval level, whereas weight is measured at the higher ratio level. The categories in interval data are the actual numbers on the scale (such as on a thermometer).
Rationale 2: Weight is generally considered to be measured at ratio level, which is the highest level of measurement. Ratio level of measurementincludes data that can be categorized and ranked; in addition, the distance between ranks can be specified, and a "true" or natural zero point can be identified.
Rationale 3: Temperature is measured at interval level; weight is measured at the ratio level.
Rationale 4: There is sufficient information for the analysis of this question.
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