Variance of exponential distribution
From timescalewiki
Theorem: Let $X$ have the exponential distribution on $\mathbb{T}$. Then, $$\mathrm{Var}_{\mathbb{T}}(X)=\dfrac{1}{\lambda^2}.$$
Proof: █
Theorem: Let $X$ have the exponential distribution on $\mathbb{T}$. Then, $$\mathrm{Var}_{\mathbb{T}}(X)=\dfrac{1}{\lambda^2}.$$
Proof: █
