Statistical Methods In Psychology and Education — DU B.A. (Prog.) with Statistics as Major Discipline Previous Year Question Papers

6. (a) Discuss the major differences between norm-referenced and criterion-referenced tests in term's of purpose, content, item selection, administration, score interpretation and reporting. (b) Describe T-scores and Stanine scores. How are they useful. in test interpretation? How does one conv.ert a raw' score to a standard score or T-score? (7,8) (P, intelligence has been operationalised through intelligence tests. How are scores normalized using the normal probability curve? (7,8) Naque of the Paper : DSE : Statistical Methods in Psychology and Education Attempt six questions in all, including questionNo.1 (i) The level of measurement that allows for both differences and ratios to be meaningful is called the (a) Nominal scale (b). Ordinal scale (c) Interval scale (d) Ratio scale (ii) The reliability of a test can be increased by (a) Decreasing the number of items (b) Increasing the..number of items (c) Using ambiguous items (d) Ignoring item analysis (iii) The proc~ess of comparing an individual's test score with a predefined standard of performance is known as (a) Norm-referenced testing (b) Discuss the relationship between reliability, validity and test length. Also provide their educational implications. (7, 8) 5. (a)Explain the different type.s of validity in psychological testing and how test length affects validity. (b) Describe the methods of determining reliability,: (i) test-retest. (ii) alternate or parallel forms, (iii) split-half technique. (iv) internal consistency (or "rational equivalence"), for each method, explain procedure, strengths and limitations. 2. (a) Explain the importance Qf statistics in psychology and education with suitable examples. Discuss the sources of errors in Psychological measurements in detail. (b) Criterion-referenced testing (c) Standard score testing (d) Reliability testing (b) What are the characteristics of a good test? Explain each characteristic in detail. (7,8) (iv) Which of the following is an example of a psychological measui.ement? 3. (a)What do you understand by the levels of measurement? Describe in details with examples. (a) Measuring body temperature (b) Measuring weight (b) Briefly describe the history and developmen.t of A psychological measurement and testing. Explain the essential characteristics of a good psychological test and .discuss its uses and limitations. (c) Measuring anxiety (d) Measuring height (v) The coefficient that indicates the consistency of scores obtained by the same individuals on two occasions is called Score. How the reliability coefficient is considered a measure of true variance? (a) Validity coefficient (b) Correlation coefficient (c) Reliability coefficient (d) .Regression .coefficient (8) Fill in the blanks : (i) The scale of measurement that categorizes da.ta without any order is call.ed the scale. (ii_) The, degree to which a test measures what it is inten`ded to measure is known as