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Code
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Display
|
Definition
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121415
|
Percentile Ranking of measurement |
Percentile Ranking of an observation value with respect a reference population. |
|
121416
|
Z-Score of measurement |
Z-score of an observation value with respect a reference population, expressed as the dimensionless quantity (x-m) /s, where (x-m) is the deviation of the observation value (x) from the population mean (m), and s is the standard deviation of the population. |
|
121414
|
Standard deviation of population |
Standard deviation of a measurement in a reference population. |
|
121417
|
2 Sigma deviation of population |
2 Sigma deviation of a measurement in a reference population. |
|
130615
|
Interquartile Range to Median ratio of population |
The interquartile range value of a population divided by the median value of the same population. IQR/M, which is one way to describe the variability of a set of measurements, is sometimes used as a metric of measurement quality. |
|
130614
|
Interquartile Range of population |
The width of the center range within which 50% of the measured values in a reference population fall. The IQR may also be described as the first quartile value subtracted from the third quartile value, or equivalently the 25th percentile value subtracted from the 75th percentile value. |