Joy Yang

6 Questions 8 Answers 0 Followers

Questions related from Joy Yang

How to estimate 2SLS with different instruments for different endogenous variables?

To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...

24 February 2021 6,547 3 View

For a neural network, in what case would the hidden layer have more nodes than the input layer?

I came across a picture denoting neural network that has more nodes (variables) in an hidden layer than the input layer. I do not know why it makes sense to have more variables than the input as...

05 December 2018 1,937 11 View

When to continue on the current topic and when to stop and change directions while doing research?

Hi guys, I might be silly to ask this question. Here is the situation I am facing and any suggestion would be appreciated. I am writing my first serious research paper in economics. At the...

24 July 2018 8,065 8 View

How to select papers when writing a literature review?

Maybe I am unprofessional to ask this question here. But I really want to know how economists decide which paper to put in a literature review. Given that two papers have a similar content, should...

17 May 2018 3,312 27 View

Comparison of two sample proportions?

When we use t test to compare two sample means, the testing statistics of paired variables and that of independent variables are different. However, whether the two variables are dependent will...

19 December 2017 6,314 3 View

To ensure independence in central limit theorem, we need sample size to be less than 10% of the population size if sampling without replacement. Why?

As is described in the title. Thanks for your help!

06 December 2017 9,904 2 View