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halank

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Feb 23, 2014, 5:30:09 AM2/23/14
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any idea in restriction?
CCST 9039assignment1.docx

mok...@connect.hku.hk

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Feb 24, 2014, 9:31:27 AM2/24/14
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limitation: not random sampling, may not be able to interview those who frequently absent from school, interviewees may be reluctant to admit that they have addictions to the Internet so they provide inaccurate answers.......   
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