A typical way to quantify aboveground carbon in forests is to measure tree diameters and use species-specific allometric equations to estimate biomass and carbon stocks. Using "citizen scientists" to ...

When we look in the mirror, it’s easy to see not only the physical attributes that define our unique features, but also the layers beneath that makeup who we are — those tired eyes given as a gift of ...

Error bars illustrate the margin of error for a survey estimate by showing how precise that estimate is. Here are some answers to common questions that might help you better understand charts with ...

Corey Buhay is a freelance writer and editor based in Boulder, Colorado. You can read her work in Backpacker, Climbing, and Outside Online, among others. For reps, there’s no such thing as a free ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Academic survey researchers tend to differ ...

A boil water notice has been lifted for northwest Harris County after a sampling error spared E. coli concerns. The video above is from a previous report. On Tuesday ...

If you asked one person their voting intention and they replied "Labour" you would not infer that the country is full of lefties, but rather that you have too small a sample. Similarly, if you see an ...

Describe the abstract idea of a sampling distribution and how it reflects the sample to sample variability of a sample statistic or point estimate. Identify the ...