Investopedia

Systematic Sampling: What It Is, Pros and Cons

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Gordon Scott has been an active investor and technical analyst or 20+ years. He ...
Investopedia

Representative Samples: What Percentage of the Population Is Needed?

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...
IEEE

A 12-b 18-GS/s RF Sampling ADC With an Integrated Wideband Track-and-Hold Amplifier and Background Calibration

Abstract: We discuss a 12-b 18-GS/s analog-to-digital converter (ADC) implemented in 16-nm FinFET process. The ADC is composed of an integrated high-speed track-and-hold amplifier (THA) driving up to ...
BBC

Data collection and sampling

Stratified random sampling - random samples are taken from within certain categories. Stratified systematic sampling - regular samples are taken from within certain categories.
BMJ

Nature and extent of selection bias resulting from convenience sampling in the emergency department

Background To compare the clinical and demographic variables of patients who present to the ED at different times of the day in order to determine the nature and extent of potential selection bias ...