Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New ...

The size of the data set—the sample size—doesn't affect standard deviation, but the sample size is a key factor in calculating the SEM. A larger random sample will always provide a mean that ...

When particles in a sample are the same size, one particle can be measured to report the result. If the sample has a narrow distribution, such as 10-25 µm, then measurement of just a few particles can ...

The following data were extracted for each meta-analysis: first author and summary effect size estimate of the meta-analysis; and first author, publication year, sample size (by groups), number of ...