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In an experiment students were allowed to choose their treatment group. What problem may result?एक प्रयोग में छात्रों को उपचार समूह चुनने दिया गया। इससे किस प्रकार की समस्या उत्पन्न हो सकती है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: Self-selection biasस्वयं चयन पक्षपात
Students choosing groups may already differ in important ways. Understand why random assignment is needed.जो छात्र समूह चुनते हैं उनमें पहले से अलग विशेषताएं हो सकती हैं। परीक्षा में यादृच्छिक आवंटन की आवश्यकता समझें।
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