Explanation : Achievement test measures the progress made on the curriculum taught to a group. A diagnostic test measures an individual's academic problem areas. Thus, the differences between the two is only of their objective.
Explanation : The relevance of an evaluation is determined by the degree to which it measures the pupil's growth towards realisation of specific objectives of the Mathematics curriculum.
Explanation : Well designed objective type tests are generally more valid, reliable and objective than essay test because (a) They sample material more broadly. (b) Discrimination between performance levels is easier to detennine. (c) Scoring consistency is virtually guaranteed.