State the factors that affect power and what factors we have to specify to do a sample size calculation. Some notes on the behaviour of sample size calculations and power for unequal group sizes This ...

In statistics, a p-value is defined as In statistics, a p-value indicates the likelihood of obtaining a value equal to or ...

Datasets that are too small may lead researchers to overlook relationships between the brain and behavior, a new study finds.

What is the average height for a male pole vaulter? This question's too broad, but a small sample size of the 12 men's finalists in Paris calculate out to both an average and median of about 1.85 ...

The nuts and bolts of our public opinion surveys. A summary of ABC News polling standards and survey methodology follows. ABC News maintains standards for disclosure, validity, reliability and ...

We calculate two entirely separate averages ... if only a few high-quality polls have recently surveyed a race. Sample size. The larger the sample size, the better — up to around 2,300 responses.

The private-sector-businesses, nonprofits and so forth - added a paltry 97,000 jobs in July. That's the smallest increase ...

After declining for two days, the rate average for 30-year refinance mortgages moved higher Monday. Rate movement among other ...

Mass photometry and SEC data will be compared via two case studies: one which showcases the two techniques’ ability to ...

Preoperative skin antisepsis with povidone iodine was noninferior to chlorhexidine gluconate for prevention of surgical site infections.