Teaching MPPSC Assistant Professor Mock Test Series 2025 General Knowledge Economy

यदि X_i एक यादृच्छिक चर है जिसकी प्रायिकता p_i(i = 1, 2... n) है, तो

1

E(X) = \(\frac{\sum X_i}{\sum p_i}\)

2

E(X) = Σ p_i X_i

3

E(X) = Σ p_i E(X_i)

4

E(X) = Σ E(p_iX_i)

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