Investigating the treatment of missing data in an Olympiad-type test – the case of the selection validity in the South African Mathematics Olympiad
Pythagoras
| Field | Value | |
| Title | Investigating the treatment of missing data in an Olympiad-type test – the case of the selection validity in the South African Mathematics Olympiad | |
| Creator | Long, Caroline Engelbrecht, Johann Scherman, Vanessa Dunne, Tim | |
| Description | The purpose of the South African Mathematics Olympiad is to generate interest in mathematics and to identify the most talented mathematical minds. Our focus is on how the handling of missing data affects the selection of the ‘best’ contestants. Two approaches handling missing data, applying the Rasch model, are described. The issue of guessing is investigated through a tailored analysis. We present two microanalyses to illustate how missing data may impact selection; the first investigates groups of contestants that may miss selection under particular conditions; the second focuses on two contestants each of whom answer 14 items correctly. This comparison raises questions about the proportion of correct to incorrect answers. Recommendations are made for future scoring of the test, which include reconsideration of negative marking and weighting as well as considering the inclusion of 150 or 200 contestants as opposed to 100 contestants for participation in the final round. | |
| Publisher | AOSIS Publishing | |
| Date | 2016-10-31 | |
| Identifier | 10.4102/pythagoras.v37i1.333 | |
| Source | Pythagoras; Vol 37, No 1 (2016); 14 pages 2223-7895 1012-2346 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://pythagoras.org.za/index.php/pythagoras/article/view/333/498
https://pythagoras.org.za/index.php/pythagoras/article/view/333/497
https://pythagoras.org.za/index.php/pythagoras/article/view/333/499
https://pythagoras.org.za/index.php/pythagoras/article/view/333/484
|
|
ADVERTISEMENT
