模型一如图所示，无法输入
In order to assess the variation in the estimated α^j over j = 1,. . .,10, we also examine two restricted versions of this model: in Model 2 we impose the restriction that makes α
j linear in j, αj =α0+γ*j， [size=14.6667px]τ1 is F-test for the validity of the restrictions on Model 1

文章的意思好像是说，在模型一估计出10个[size=14.6667px]α值的基础上，增加一个[size=14.6667px]α线性变化的条件，这个模型2是如何设定的？又如何进行这个F效度检验？