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The Youth Risk Behavior Survey was determined to have an internal consistency of the total knowledge...

The Youth Risk Behavior Survey was determined to have an internal consistency of the total knowledge questionnaire of 0.81. What does this mean?

Math   Statistics-And-Probability   
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Internal consistency tells us about the actual quality of measurement of variable that we wished to measure using the specified study.

It is given internal consistency of the total knowledge questionnaire of 0.81, this means that there is a good measurement of total knowledge questionnaire. Internal consistency of 0.81 shows that there is very less error in the measurement and study does good in completing the actual measurement. It shows that the Youth Risk Behavior Survey measured actual data most of the time and didn't measured irrelevant data on higher scale.

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