Mathematics · Probability and Statistics
यदि एक विविक्त यादृच्छिक चर (discrete random variable) X, 1 से k तक के सभी संभावित पूर्णांक मान ले सकता है, जिनमें से प्रत्येक की प्रायिकता 1k है, तो इसका प्रसरण (variance) क्या है?
- 1k2 + 16
- 2k2 + 112
- 3k2 - 16
- 4k2 - 112✓
सही उत्तर देखें
k2 - 112
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