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Exploring the differences of Finnish students in PISA 2003 and 2012 using educational data mining

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Authors
Koskela, Anu
Date
2016
Discipline
TietotekniikkaMathematical Information Technology

 
Suomi on aina saanut hyviä tuloksia PISA-tutkimuksissa, mutta vuonna 2012 tulokset huononivat merkittävästi. Vuosien 2003 ja 2012 aineistoihin sovellettiin muokattua tiedonlouhinta-algoritmia nimeltään k-means++. Tuloksena saatiin kummallekin aineistolle viisi klusteria, joita vertailtiin keskenään. Huonommin pärjänneet klusterit olivat pysyneet samankaltaisina, mutta paremmin pärjänneiden klusteri oli jakautunut. Lisäksi keskiverrosti pärjänneiden klusteri oli kasvanut huomattavasti. Kaikkien klustereiden tulokset matematiikassa olivat laskeneet vuodesta 2003.
 
Finland has always gotten good scores in PISA studies, but in 2012 the results dropped significantly. A modified version of a data mining algorithm called k-means++ was applied to 2003 and 2012 Finnish PISA data. As a result five clusters were created for both data sets and the results were compared. The clusters with lower results had remained similar but the cluster with higher scores had been divided. Additionally the medium cluster had grown significantly. The results in mathematics had dropped in all clusters since 2003.
 
Keywords
tiedonlouhinta k-means++ klusterointi PISA klusterianalyysi PISA-tutkimus
URI

http://urn.fi/URN:NBN:fi:jyu-201612135053

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