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A reliability coefficient

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The reliability coefficient is maximized when:

a) The examinees are heterogeneous
b) the examiners are homogeneous
c) THe examinees are very similar
d) Both b abd c are correct

Answers are explained below.

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A reliability coefficient is a Pearson product-moment correlation coefficient between two sets of scores as described above. Correlation ...

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The reliability coefficient is defined and explained.

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See Also This Related BrainMass Solution

When you use an instrument to gather data in an educational research project, you need to be sure the instrument is valid and reliable. When using an instrument made by someone else, you need to know what the reliability and validity scores are and how they were achieved. When you design your own instrument, you must determine the reliability and validity of the instrument to make your data reliable and valid. Use library sources to develop an understanding of the various ways to determine reliability and validity.

Discuss 2 ways you could use to test the reliability of your research instrument.

Discuss 2 ways you could use to test the validity of your research instrument.

Name the methods of each, describe how they would be done and describe which one of each you will actual use and why. Remember the instrument must be tested for reliability and validity before you can use it for research

A research instrument is considered valid to the extent that it measures what the user is trying to measure. If the research instrument also measures extraneous variables, its validity is weakened proportionately.Test reliability, usually reported in reliability coefficients, is a measure of how consistently a research instrument measures whatever it is measuring.

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