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Investigating the treatment of missing data in an Olympiad-type test – the case of the selection validity in the South African Mathematics Olympiad
Long, Caroline
;
Engelbrecht, Johann
;
Scherman, Vanessa
;
Dunne, Tim
(
AOSIS Open Journals
,
2016-10-31
)
An application of the Rasch measurement theory to an assessment of geometric thinking levels
Stols, Gerrit Hendrikus
;
Long, Caroline
;
Dunne, Tim
(
Routledge
,
2015
)
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