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RANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsRANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION3 Marks
Question
State properties of binomial distribution.
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Answer

1. It is a discrete distribution.
2. Parameters are $ n $ and $ p $.
3. Mean = $ np $ and Variance = $ npq $.
4. For $ p < 0.5 $, it is positively skewed; for $ p > 0.5 $, it is negatively skewed; for $ p = 0.5 $, it is symmetric.

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