Which are correct facts relating to reliability and validity of research tool ?
A. Consistency is necessary for reliability
B. Validity is the precondition for reliability
C. A reliable test is always valid
D. A valid test is always reliable
E. There is no relationship between reliability and validity of a test
Choose the correct answer from the options given below :

Correct option is C

The correct answer is (c) (A) and (D) Only
Reliability refers to the consistency of a measure; a research tool is considered reliable if it produces consistent results under consistent conditions over time. Validity, on the other hand, refers to the accuracy of a measure, or the extent to which the tool measures what it claims to measure. For a test to be valid, it must first be reliable because accuracy implies consistency; however, a reliable test is not necessarily valid because it might consistently measure something other than what it is supposed to measure. Therefore, while validity implies reliability, the converse (a reliable test is always valid) is not true.
Information Booster:

• Validity as the Precondition for Reliability (B): This statement is incorrect because validity and reliability are related but distinct concepts. While a valid measure must be reliable, reliability does not ensure validity.
• A Reliable Test is Always Valid (C): This statement is incorrect. A test can consistently give the same results (reliable) but not accurately measure the construct it is intended to measure (validity issue).
• There is No Relationship Between Reliability and Validity of a Test (E): This statement is incorrect. There is a significant relationship between reliability and validity; reliability is a prerequisite for validity, as consistency (reliability) is necessary for accuracy (validity) in measurement.Top of Form