原标题：显著吗？系数多大？还有其他吗？

1）IN PRAISE OF CONFIDENCE INTERVALS

David Romer (University of California, Berkeley)

ABSTRACT

Most empirical papers in economics focus on two aspects of their results: whether theestimates are statistically significantly different from zero and the interpretation of thepoint estimates. This focus obscures important information about the implications of theresults for economically interesting hypotheses about values of the parameters otherthan zero, and in some cases, about the strength of the evidence against values of zero.This limitation can be overcome by reporting confidence intervals for papers’ mainestimates and discussing the economic interpretation of parameter values within theconfidence intervals.

Why do we care?

"Knowing only a point estimate and that it is significantly different from zero is not enough toknow what values of the parameter other than zero the data provide strong evidence against, andwhat values they provide little reason to object to. Since in almost all applications there arehypotheses of interest other than that a parameter is zero, this is an important omission."

https://www.aeaweb.org/conference/2020/preliminary/paper/TeQ7k9Bn

2）Time series econometrics for the 21st century

Bruce E. Hansen

ABSTRACT

What topics should be taught to undergraduate students in econometric timeseries?

“The appropriate way to report regression estimates is coefficient estimates plus standard errors, asthe latter can be used to construct confidence intervals or test statistics. Inappropriate reporting methods include coefficient estimates plus t-ratios, as this emphasizes testing (which is not typically the goalof estimation), and coefficient estimates plus asterisks, as this emphasizes statistical significance ratherthan magnitudes. It is always better for students to focus on parameter estimates, their magnitudes, andinterpretations, rather than simple statements about significance.”

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