The final line pairs the MSE expressions with the wrong estimators. As printed: > MSE(σ²_unb) = (2N−1)/N² · σ⁴ and MSE(σ²_mle) = 2/(N−1) · σ⁴ The correct pairing is the reverse: MSE(σ²_unb) = 2/(N−1) · σ⁴ MSE(σ²_mle) = (2N−1)/N² · σ⁴
The final line pairs the MSE expressions with the wrong estimators. As printed:
The correct pairing is the reverse:
MSE(σ²_unb) = 2/(N−1) · σ⁴
MSE(σ²_mle) = (2N−1)/N² · σ⁴