AWeightage to objectives
BWeightage to content
CWeightage to form of questions
DWeightage to difficulty level
Answer:
D. Weightage to difficulty level
Read Explanation:
Weightage to difficulty level
The discriminating power of a test refers to its ability to differentiate between high-achieving and low-achieving students. This is ensured by including questions with varying difficulty levels.
A test that is either too easy or too difficult for everyone will have zero discriminating power. To effectively differentiate between students, a test must have a balanced distribution of difficulty:
Easy Questions: Ensure that low-achievers get some marks and aren't completely discouraged.
Average Questions: Target the majority of the student population.
Difficult/Challenging Questions: These are the most critical for discrimination. Only students with a deep understanding or higher ability can answer these correctly, thereby separating them from the average and low-performing groups.
Weightage to objectives: This ensures Content Validity. It makes sure the test measures what it intends to (knowledge, understanding, application, skill), but it doesn't necessarily guarantee that it will distinguish between students.
Weightage to content: This ensures that all chapters or topics are covered proportionally. It provides Breadth to the test but not necessarily discrimination.
Weightage to form of questions: This refers to the mix of Objective, Short Answer, and Essay questions. While different formats test different skills, it is the difficulty within those formats that provides discrimination.
The Blueprint (Table of Specifications):
When a teacher prepares a Blueprint, they include all four of these weightages. However, the specific goal of separating the "best" from the "rest" is mathematically and practically achieved through the careful selection of difficulty levels.