Real Time Search - Social Mention. Kurrently - A real-time search engine for Facebook and Twitter. Sample Size Calculator - Confidence Level, Confidence Interval, Sample Size, Population Size, Relevant Population - Creative Research Systems.
This Sample Size Calculator is presented as a public service of Creative Research Systems survey software.
You can use it to determine how many people you need to interview in order to get results that reflect the target population as precisely as needed. You can also find the level of precision you have in an existing sample. Before using the sample size calculator, there are two terms that you need to know. These are: confidence interval and confidence level. Approved suppliers.