Stanislav Kolenikov, Gustavo Ángeles
The last several years have seen a growth in the number of publications in economics that use principal component analysis (PCA) in the area of welfare studies. This paper explores the ways discrete data can be incorporated into PCA. The effects of discreteness of the observed variables on the PCA a...
Stanislav KolenikovGustavo Angeles
Suppose data for a survey with multi-stage design is to be collected in two periods of time. This paper assesses the relative merits of keeping the same clusters in the sample vs. sampling new clusters, under dierent statistical (correlation between clusters and over time) and logistical (costs of s...