In a sample survey, in contrast to a full population survey, only one part of a population is questioned on a given topic. Based on the results of this sample, a projection is made about the rest of ...

Sampling populations, calculating weighted estimates, and accounting for errors, outliers, and uncertainty are important steps in our work to produce recreational catch statistics. There are two broad ...

Use our calculator to determine your own survey sample size. Plus, we provide a quick explainer on how to use sampling to improve your customer experience program and rein in fees. “For a precise ...

Wondering how many people in the United States have a smartphone? If you poll 20 people on the street, your survey won’t be representative of the entire American population. But if you just want to ...

The first part of this three-part series described the science behind sample surveys. This next part identifies several opinion poll outfits and the people leading these firms, and then describes ...

Note: This report was updated on Dec. 30, 2015 to reflect the January-July 2015 National Health Interview Survey estimates released on December 1, 2015. Telephone surveys face numerous challenges, but ...

India's first Prime Minister Jawaharlal Nehru (left) with scientist and statistician PC Mahalanobis Indian data is staring at a credibility crisis with official numbers on a range of subjects - from ...

There are a lot of shoddy polls out there. Some are frank about their shortcomings and some aren’t. Here are some ideas for getting an accurate picture of what a poll can tell you. “But mom, everyone ...

The success of our surveys relies on the participation of the people we sample. Because it’s not practical or possible for us to intercept each of the millions of recreational anglers fishing along ...

The National Sample Survey, under the Ministry of Statistics and Programme Implementation, has been conducting large-scale sample surveys on All-India basis since the 1950s. These surveys are the most ...

This is the first of a three-part series based on the 20th Jaime V. Ongpin Memorial Lecture on Public Service in Business and Government delivered last October 27, 2021. As of October 8, 2021, for the ...