求问计量经济学和统计学问题
题目
求问计量经济学和统计学问题
楼主在做作业的时候遇到一个很奇怪的题目.
请说出以下科目的作用,还给了一个例子:“ordinary least squares - useful in the development of linear economic models”.一共4个小问,【要求用和例子相同的方法表述】.
1.Hypothesis Testing (confidence and prediction intervals) -
2.Maximum Likelihood Estimation -
3.Multicollinearity,Heteroscedasticity and Autocorrelation -
4.Time Series Regression -
答案
1. Hypothesis Testing (confidence and prediction intervals) -useful in judgement of whether the variables are significant;
2. Maximum Likelihood Estimation -another kind of estimation method that can be used in almost all sorts of econometrics models;
3. Multicollinearity, Heteroscedasticity and Autocorrelation -three common phenomena that violate the classical linear hypothesis;
4. Time Series Regression -useful in regressions which use time series data
这种题目大答案并不固定,只是检验一下初学者对这些名词的掌握程度而已.
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
热门考点