Reliability
•Reliability indicates the stability and consistency with which the data collection instrument measures the concept.
•Reliability has to do with the accuracy and precision of a measurement procedure ... Practicality is concerned with a wide range of factors of economy, convenience, and interpretability
Validity
•Validity refers to the extent to which a test measures what we actually wish to measure.
•Validity test of a data collection instrument enables us to ascertain that we have measuring the correct concept and not something else. There are three types: content, criterion and construct validity
johnson mwenjera answered the question on December 13, 2017 at 10:15
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Date posted: December 13, 2017. Answers (1)
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