The first video in Pew Research Center’s Methods 101 series helps explain random sampling – a concept that lies at the heart of all probability-based survey research – and why it’s important. Fresh ...

Here at Pew Research Center, we are often asked about how we conduct our research. We work hard to make our methodologies transparent and understandable, but we also know that survey mode effects and ...

When auditing a company, auditors use a combination of professional judgment and statistical sampling methods to estimate account balances. Statistical sampling is an efficient way to design samples, ...

There is little dispute that the False Claims Act (FCA) is among the most potent weapons for fighting fraud and government waste. In just this past fiscal year alone, the DOJ utilized the FCA to ...

If a taxpayer calculates research tax credits using an appropriate statistical sampling method on its tax return, does the taxpayer then make a prima facie case in the Tax Court by introducing ...