Measurement of blood pressure is which type of data
**Core Concept**
Measurement of blood pressure is a quantitative assessment that yields numerical data. This is an example of a continuous variable, as blood pressure can take any value within a given range.
**Why the Correct Answer is Right**
The correct answer is related to the type of data that is continuous and can be measured with great precision. Blood pressure measurements are examples of **ratio data**, as they have a true zero point and can be meaningfully compared using mathematical operations.
**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect because nominal data is used for labeling variables without any quantitative value.
**Option B:** This choice is incorrect because ordinal data has a natural order or ranking but does not allow for meaningful mathematical comparisons.
**Option C:** This choice is incorrect because interval data lacks a true zero point, which is not the case with blood pressure measurements.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that understanding the type of data is crucial for selecting the appropriate statistical analysis.
**Correct Answer:** D. Ratio data