Advantages of Simple Random Sampling in Research

Discover how simple random sampling ensures accurate and unbiased population research, offering efficiency and fairness over ...
Kellogg School of Management

The Fundamental Concept

Consider a population of 70 individuals, for which you wish to estimate the mean annual income, μ. Assume that you have decided to use the following estimation procedure to make your estimate: simple ...
Pew Research Center

2024 National Public Opinion Reference Survey Methodology

SSRS conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol. The survey was fielded from Feb. 1, 2024, to June 10, ...
Pew Research Center

2023 National Public Opinion Reference Survey (NPORS) Methodology

Ipsos conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol. The survey was fielded from May 19 to Sept. 5, 2023.