Talk:Mean squared prediction error

Summations and expectations
Throughout this article, shouldn’t every summation sign and every instance of $$\sigma^2$$ and $$\hat{\sigma}^2$$ be multiplied by 1/n? Loraof (talk) 16:28, 21 May 2018 (UTC)

I’ve gone ahead and changed it. Loraof (talk) 23:33, 28 May 2018 (UTC)

Should we put 2 in front of trace for the third and fourth equations in section "Estimation of MSPE over the population"? Wentianq (talk) 06:32, 2 April 2019 (UTC)