The first step in using this formula is finding the Z-score based on your desired confidence level. You can use an online Z-score table or refer to Excel’s built-in NORM.S.INV() function. To find the ...

Calculating the sample size is an essential part of any statistical analysis or research project. If you are a researcher looking to find the right sample size for your study, Microsoft Excel can be a ...

This self-paced online course covers the basics of sample size estimation. It will be of use to those embarking on a research project and who are perhaps trying to complete ethics and grant ...

NOTE: This course will be delivered in hybrid mode, i.e. the in-person lecture will be transmitted live on zoom. The face-to-face part of the hybrid courses will go ahead conditional on at least 5 ...

Sample size is the number of completed responses your survey receives. It’s called a sample because it only represents part of the group of people (or target population) whose opinions or behavior you ...

Sample size estimation is an overlooked concept and rarely reported in diagnostic accuracy studies, primarily because of the lack of information of clinical researchers on when and how they should ...

One of the most important statistical analyses when designing animal and human studies is the calculation of the required sample size. In this review, we define central terms in the context of sample ...

Clinical prediction models aim to predict outcomes in individuals, to inform diagnosis or prognosis in healthcare. Hundreds of prediction models are published in the medical literature each year, yet ...