Researchers have proposed an optimized ratio-type estimator that uses auxiliary attributes to estimate population means more ...

Background: Recursive partitioning is a non-parametric modeling technique, widely used in regression and classification problems. Model-based recursive partitioning is used to identify groups of ...

Two are better than one when it comes to sampling methods for tracking the location and timing of toxic chemical contamination in waterways, according to researchers at Penn State. The team tested two ...

Election polls can be fascinating, exciting, confusing and overwhelming. To help readers learn the most from election polls — and avoid getting misled — here are seven simple tips for following ...

What if there was a single number that could tell you when you’ve saved enough for retirement? A formula going around the internet promises to do just that. It is called Coast FI. The FI stands for ...

Rich Hein is a veteran technology journalist with more than two decades covering developer, consumer and enterprise topics. Rich's career has been dedicated to service journalism, connecting readers ...

Probability proportional to size (PPS) sampling is a method for selecting sampling units — typically clusters such as clinics, schools, villages, or facilities — where each unit’s chance of being ...

Simple random sampling (SRS) is the probability sampling method in which every member of a defined population has an equal and independent chance of being selected for the sample. “Equal” means no ...

DEAR DR. ROACH: My 83-year-old sister underwent the simple procedure of replacing her pacemaker battery. She’s also been diagnosed with early signs of dementia. They gave her propofol, and when she ...

Dr. Weatherby is the director of the Digital Theory Lab at New York University. Dr. Recht is a professor of electrical engineering and computer sciences at the University of California, Berkeley. See ...

[Jakub] is a musician, and found himself in need of a simple way to trigger samples via MIDI when on stage. So many commercial solutions exist, but most were overkill for the job or too messy and ...