The Ninth Amendment states that the list of rights enumerated in the Constitution is not exhaustive, and that the people retain all rights not enumerated. The Tenth Amendment assigns all powers not delegated to the United States, or prohibited to the states, to either the states or to the people.
Many of our standardized tests in psychology use interval scales. An IQ (Intelligence Quotient) score from a standardized test of intelligences is a good example of an interval scale score. IQ scores are derived from a lengthy testing process that requires the participant to complete a number of cognitive tasks.
For population-based assessment, there are two ways of expressing child growth survey results using Z-scores. One is the commonly used cut-off-based prevalence; the other includes the summary statistics of the Z-scores: mean, standard deviation, standard error, and frequency distribution.