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Unit 24 : Question Bank


            these educational objectives into test items. This is essential because the educational objectives  Notes
            may differ from program to program. We have intentionally left the discussion of the third
            domain i.e. psychomotor. Psychomotor domains deals with behaviours like gross bodily
            movements, finely co-ordinated bodily movements, non-verbal communications and speech
            behaviours which are more suited for the practical components of the exam.
            Computerised question banks
            One essential activity for the “On demand” examination system is the preparation of question
            banks. For this, let us try to relate the type of questions with the educational objectives. The table
            below shows the domains of learning outcomes and the question type, which will measure them
            effectively.
                         Table : Taxonomy of educational objectives vs. question types


             Domains                                         Question Type
             A : Cognitive
                  1.  Knowledge                       True-False type, Multiple Choice,
                  2.  Comprehension                    Matching, Short Answer type
                  3.  Application
                  4.  Analysis                                 Essay type
                  5.  Evaluation
             B : Affective
                  1.  Interests
                  2.  Values                                   Essay type
                  3.  Attitudes

            So, one can easily classify the question paper in three sections i.e. very short answer types, short
            answer types and long answer types. These sections will comprise of the following.


            Very Short answer type  ⎯⎯→  True — False type Multiple choice, Matching

            Short answer type     ⎯⎯→   Short questions


            Long answer type      ⎯⎯→   Essay type questions

            So, while preparing question banks one has to take care of these three sections. An ideal question
            bank will have all three of questions and when one attempts to draw a set of question paper from
            it, the only thing he has to decide is the number of questions to be taken from each section.
            Using simulation and random number generators
            Parallel sets can be made very easily with the help of random number generators. Arithmetic
            methods, particularly suited for computer operation are available for generating random numbers.
            The most common method is with the help of Linear Congruence Generator.

                   Z  =  ( Za  i – 1  +  ) c  mod m, a,c,m,Z  are + ve integers and a,c,Z ≤  xm
                    1
                                             0
                                                                    0
            The choice of numbers, depends upon the seed, which initialise the recursive computation. To
            make the calculations simple and to maintain a uniformity we have a set of 20 random numbers
            taken from Uniform (0,1) distribution on six columns.



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