Probability Distributions — Formula Sheet
CBSE · Class 12 · Applied Mathematics
2 formulas from Probability Distributions (CBSE Class 12 Applied Mathematics) on one page, grouped by topic. Covers Random Variables and Probability.
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Formulas and Key Relations
Key relations
The expected value E(X) of a random variable X is the weighted average of all possible values, calculated as E(X) = Σ(xi × pi).
Variance measures the spread of a distribution around its mean, calculated as Var(X) = E(X²) - [E(X)]².
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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