欢欢 · 2021年11月09日
* 问题详情，请 查看题干
NO.PZ202106160300004306
问题如下：
Based on Exhibit 2, the degrees of freedom for the t-test of the slope coefficient in this regression are:
选项：
A.48 B.49 C.50解释：
A is correct. The degrees of freedom are the number of observations minus the number of parameters estimated, which equals 2 in this case (the intercept and the slope coefficient). The number of degrees of freedom is 50-2=48.
如题。。。。。。。。。
NO.PZ202106160300004306 问题如下 Baseon Exhibit 2, the grees of freem for the t-test of the slope coefficient in this regression are: A.48 B.49 C.50 A is correct. The grees of freem are the number of observations minus the number of parameters estimate whiequals 2 in this case (the intercept anthe slope coefficient). The number of grees of freem is 50-2=48. 为什么t检验的自由度为n-k-1？难道不是F(k，n-k-1)吗？
NO.PZ202106160300004306 如题~~~~~~~~~并且，有这种问法吗
