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4 questions
A research instrument can be reliable, but not valid. True or False?
True
False
Reliability is an optional criteria for determining the overall validity of a test or questionnaire. True or False
True
False
Validity is a concept that... (choose the best answer)
Measures the consistency of the measurement taken under the study.
Covers the the full range of the issue set for the study
Measures the accuracy of the concept that it supposes to measure.
A thermometer is measuring the body temperature of healthy persons as 38 Degree Celsius in many times. This instrument is considered as ...
reliable
valid
both valid and reliable
not valid
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