Formal definition. Suppose we are given a regression function yielding for each an estimate ^ = where is the vector of the i th observations on all the explanatory variables.: 181 We define the fraction of variance unexplained (FVU) as: = = / / = (=,) = where R 2 is the coefficient of determination and VAR err and VAR tot are the variance of the residuals and the sample …

Mar 15, 2022 · In just 18 months, Fort Bragg lost over 80 soldiers from “sudden” and “unexplained” causes. According to officials, 33 of the fatalities are of “undetermined” causes. Fort Bragg cannot explain why dozens of soldiers are dying in their own bunks.

Pajamas definition, clothing for wearing in bed, consisting of usually loose-fitting pants or shorts and matching top: my favorite pair of flannel pajamas. See more.

Mystery definition, anything that is kept secret or remains unexplained or unknown: the mysteries of nature. See more.