Randomized experiments have long been a cornerstone of scientific research. And many tech companies run randomized tests to learn from the huge amounts of data their customers generate. In 2019, ...

The Annals of Statistics, Vol. 42, No. 3 (June 2014), pp. 850-871 (22 pages) We propose a consistent estimator of sharp bounds on the variance of the difference-in-means estimator in completely ...

Data collection is sometimes performed without considering the effect poorly collected data has in the strength of statistical conclusions. When researchers properly design an experiment, they are ...