Rewrite the code to clean PIRLS data

yuqiliao / InternationalAssessment_MachineLearning

Exploring the applying machine learning techniques to the international studies

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Rewrite the code to clean PIRLS data #1

Closed nguyentr17 closed 6 years ago

nguyentr17 commented 6 years ago

[x] Missing rule
[x] Recode plausible values to achievement level dummy variables
[x] Choose student and teacher variables (using grepl) Line 40-45

nguyentr17 commented 6 years ago

@yuqiliao Why do we use asribm01 which is on scale 1-5 for Y? Can we not use rrea and then average it and get achievementLevel?

yuqiliao commented 6 years ago

that's an option! I did that simply to follow the TIMSS paper. In the TIMSS/PIRLS, besides 5 PV, the datasets also provide 5 proficiency levels (such as asribm01) based on 5 PVs, i thought maybe it is "more correct" to use these 5 proficiency levels. you are right, we could totally do what you said.