Which of the following is NOT a type of standard score?

Understanding standard scores is essential in the field of counseling and education, as they provide a way to compare individual scores to a reference group. Standard scores typically have a defined mean and standard deviation, allowing practitioners to understand where a score falls in relation to a population's average performance.

Z-scores are a common type of standard score that indicate how many standard deviations a given score is from the mean. They are useful for understanding the relative position of a score within a normal distribution.

T-scores also represent a type of standard score, which is often used to communicate results in psychological testing. T-scores are standardized to have a mean of 50 and a standard deviation of 10, allowing for easy interpretation in a different format than Z-scores.

Deviation IQ scores are another form of standard score commonly used in intelligence testing. These scores indicate how an individual's score compares to a normative sample and is typically centered around 100 with a standard deviation of 15.

In contrast, Geometry Scores do not fit into the category of standard scores. They represent performance in a specific subject area and do not conform to the structures of standard scoring systems, which rely on the computation of means, standard deviations, and interpretations that define Z-scores, T-scores,