किसी विशेष क्रम या पदानुक्रम में चर या उपसमूहों को रैंक करने के लिए मापन के किस पैमाने का उपयोग किया जाता है?

In educational testing and evaluation, the 'validity' of a test refers to:

The primary objective of effective teaching at the higher education level is to:

Match List I (Research Method) with List II (Characteristic): Testbook (a) Survey Method - (III) Collection of data from a large population (b) Experimental Method - (IV) Establishing cause-effect relationships (c) Historical Method - (I) Study of past events using documents and records (d) Case Study Method - (II) In-depth study of a single unit Which match code is correct?