Mathematics · Data Collection
निम्नलिखित में से कौन सा प्राथमिक आंकड़ों के संग्रह की एक विधि है?
- 1प्रत्यक्ष व्यक्तिगत साक्षात्कार
- 2अप्रत्यक्ष व्यक्तिगत साक्षात्कार
- 3गणकों के माध्यम से अनुसूचियां
- 4उपरोक्त सभी✓
सही उत्तर देखें
उपरोक्त सभी
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