Qualities of a good test 1 Validity 2

Qualities of a good test 1. Validity 2. 2. Reliability 3. 3. Practicality 4. Objectivity 5. Differentiability

What is practicality The word practicality means usability or feasibility. A test will be practicable if it is easy to administer, easy to interpret and economical in operation. A good test is that which have sufficiently simple instruction so that it can be administered by a person of low level intelligence,

Practicality refers to the economy of time, effort and money in testing, in other words, a test should be: Ø easy to design Ø easy to administer Ø easy to mark

Practicability of the test depends up on. . . • Administrative ease • Scoring ease • Interpretative ease • Economy

What is objectivity Objectivity is the characteristic which has no personal judgment and is free from personal liking and disliking in scoring process.

A test is said to be objective if it is free from personal prejudices in interpreting its scope as well as in scoring the responses. • Objectivity of a test can be increased by using more objective type test items and the answers are scored according to model answers provided.

Differentiability An important measuring instrument which means variability. Differentiability or variability is used for individual differences of the students. one individual is different from other with respect to some behaviors. These individual differences should be kept in mind during administrating or scoring a test.

Continue… Differentiability is important for a good test. i. e a test scoring in Group A were 50, 60, 70, 80 and 90. In Group B the scores were 68, 69, 70, 71 and 72. In each case the average is 70. This apparently shows that both groups were similar to one another.

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