Using a new technique, Hemoglobin was estimated in a blood sample. The test was repeated for 10 times. The reports were 9.5, 9.2, 9.4, 9.6, 9.7, 9.9, 10.5, 12.1. Accurate v. ue of Hb was estimated by standard test to be 10.2. The new technique has:
Correct Answer: Low validity and low reliability
Description: Reliability is synonymous with consistency of test, i.e. it should produce consistent results when repeated n number of times.
Validity refers to the degree in which our test or other measuring device is truly measuring what we intended it to measure, i.e. accuracy of the test. The validity often is associated by comparing a measurement method with the best possible method of measure that is available. For example, the validity of BP measurements obtained by a sphygmomanometer might be compared with those obtained by intra-arterial measurements.
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now