Compared to IQ Scores of People in the Normal Range

question 4

Multiple Choice

Compared to IQ scores of people in the normal range of intelligence, evidence indicates that the IQ tests scores of people with mental retardation are

• A) more reliable and valid.
• B) less reliable and valid.
• C) more free of cultural bias.
• D) less free of cultural bias.

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Definitions:

Population Standard Deviation

A measure of the dispersion or variability within a population data set, indicating how spread out the data points are from the mean.

Interval Estimate

An estimate of a population parameter that gives an interval believed to contain the parameter.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution without violating any constraints.

T Distribution

A probability distribution used in statistical analysis that is applicable when the sample size is small and the population variance is unknown.