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of an instrument. In other words, do the measures (questions, observation logs, etc.) accurately assess what you want to know? An instrument that is externally valid helps obtain population generalizability, or the degree to which a sample represents the population. These terms are often used on scholastic outputs such as thesis studies, term papers, research papers, and the likes. It is best to use an existing instrument, one that has been developed and tested numerous times, such as can be found in the.
One specific type is parallel forms reliability, where two equivalent tests are given to students a short time apart. There are many statistical tools you can use to measure reliability. Using the above example, college admissions may consider the SAT a reliable test, but not necessarily a valid measure of other quantities colleges seek, such as leadership capability, altruism, and civic involvement. External Reliability, internal reliability, or internal consistency, is a measure of how well your test is actually measuring what you want it to measure. For research and testing, there are subtle differences. The remainder of this discussion focuses on external validity envs honors thesis cu boulder and content validity. Recall that a sample should be an accurate representation of a population, because the total population may not be available.
How do I present my validity and reliability results in my thesis? The Importance of, validity and, reliability in Research Methodology
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