Education · Research Aptitude
डाक द्वारा भेजी जाने वाली प्रश्नावली सर्वेक्षण की एक प्रमुख सीमा क्या है?
- 1अनुत्तर (गैर-प्रतिक्रिया) की उच्च दर✓
- 2एक कवरिंग लेटर की आवश्यकता
- 3अतिरिक्त डेटा की उपलब्धता
- 4पूरक प्रश्नों की आवश्यकता
सही उत्तर देखें
अनुत्तर (गैर-प्रतिक्रिया) की उच्च दर
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