Asked by Evelin Guifarro on May 04, 2024
Verified
On normally distributed curves, which of the following is NOT true?
A) The percentile rank mean is always p = 50.
B) The mean of z scores is always 0.
C) The mean of the standard deviation is 0.
D) The mean of standard scores vary as a function of the type of standard score .
E) The mean of the publisher type score varies as a function of the publisher.
Percentile Rank
A score indicating the percentage of scores in its frequency distribution that are equal to or lower than it, providing a relative position of an individual's score in a group.
Standard Deviation
A statistical measure of the dispersion or spread of a set of data points in relation to their mean.
Publisher Type Score
A scoring system or scale provided by the publisher of a test or assessment tool, often used to interpret individual or group test results.
- Acquire insight into the significance of standard deviation and mean for interpreting test scores.
Verified Answer
TF
Tariq FerozeMay 06, 2024
Final Answer :
C
Explanation :
The mean of the standard deviation is not zero. The mean of a normally distributed curve is always the same as the median and the mode, but the mean of the standard deviation is not zero.
Learning Objectives
- Acquire insight into the significance of standard deviation and mean for interpreting test scores.