Question
What does the ponderal index measure?
The correct answer is
Body weight relative to height cubed
Ponderal Index: What It Measures
The ponderal index is a measurement used to assess body build. It relates a person's weight to their height.
Core Measurement Principle
The ponderal index specifically measures body weight relative to the cube of a person's height. This relationship is calculated using the formula:
$ PI = \frac{Weight}{Height^3} $This definition aligns directly with Option A.
Analysis of Options
- Option A correctly identifies the ponderal index as measuring body weight relative to height cubed.
- Option B describes measures like Body Mass Index (BMI), which uses height squared ($Height^2$), not cubed.
- Option C (Lean body mass) and Option D (Body fat percentage) refer to body composition metrics, which are different from the ponderal index.
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Important Questions from Measurement and Analysis of Data - Teaching
- F-ratio is
- Which statements of the following are true about Spearman-Brown prophecy formula?
A. In the split half method, the reliability coefficient of the whole test can be estimated with the help of
reliability coefficient of the half test by using this formula.
B. This formula may be used to estimate the reliability of ratings as well as test scores.
C. It cannot be used to estimate the reliability of paired comparisons.
D. It cannot be used to obtain the effect on reliability by lengthening or repeating a test.
Choose the correct answer from the options given below: - Which of the following is NOT true about errors in measurement?
- In a two-tailed test, for a particular degree of freedom, if a null hypothesis could not be rejected at 0.01 level of significance, then at 0.05 level of significance, this null hypothesis
- In a study on scaling of attitude items, eleven statements were included. What would be the number of pairs of attitude statements ?
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