In Order to Study the Attitudes of the People Who

question 19

Multiple Choice

In order to study the attitudes of the people who live in Tennessee, I obtain a copy of the census of that state and interview every 1,000th person on that list. My procedure will provide an approximately

• A) normal sample.
• B) experimental sample.
• C) proportional sample.
• D) random sample.

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Definitions:

Standard Error of Measurement

The range of scores where we would expect a person’s score to fall if he or she took the instrument over and over again—in other words, where a “true” score might lie. It is calculated by taking the square root of 1 minus the reliability and multiplying that number by the standard deviation of the desired score.

Median

A measure of central tendency that is the middle score, or the score for which 50% of scores fall above and 50% fall below. In a skewed curve or skewed distribution of test scores, the median is generally the most accurate measure of central tendency since it is not affected by unusually high or low scores.

Standard Error of Measurement (SEM)

The margin of error in an individual's score, representing the variability in scores if the test were administered multiple times.

Test-Retest Reliability

A measure of consistency where the same test administered to the same group of individuals at two different points in time produces similar results.