Вопрос
FORMULA FOR CALCULATING THE AVERAGE bar (x) IN THE EQUATION OF THE LINEAR SMOOTHING FUNCTION hat (y)=alpha _(0)+alpha _(1)x BY THE METHOD OF LEAST SQUARES Select one: =(1)/(n)sum _(i=1)^nx_(i)^2 =sum _(i=1)^nx_(i) =(1)/(n)sum _(i=1)^nx_(i)y_(i) =(1)/(n)sum _(i=1)^ny_(i) D =(1)/(n)sum _(i=1)^nx_(i)
Решения
3.9
(293 Голоса)
Юзефа
элита · Репетитор 8 лет
Ответ
The correct answer is1}{n}\sum _{i=1}^{n}x_{i}
\hat {y}=\alpha _{0}+\alpha _{1}x
\bar {x}
x
\bar {x}
\frac {1}{n}\sum _{i=1}^{n}x_{i}
n
x_{i}
x$.