这题为什么减了两个自由度
------------------------------
No.PZ202106160300004402
来源: 原版书
Based on Exhibit 1, the standard error of the estimate is closest to:
您的回答, 正确答案是: B
A
不正确0.04456
B
0.04585
C
0.05018
数据统计(全部)
做对次数: 4
做错次数: 1
正确率: 80.00%
数据统计(个人)
做对次数: 0
做错次数: 1
正确率: 0.00%
解析
B is correct. The standard error of the estimate for a linear regression model with one independent variable is calculated as the square root of the mean square error:
{s_e}=\sqrt{\frac{{0.071475}}{{34}}}=0.04585
se
=34
0.071475
=0.04585
