The determination of sample size is related to the type of research. If it is a quantitative study, it needs a larger sample size to improve the statistical ability of the study. For qualitative research, a relatively small sample size is enough. Use statistical tools. By using statistical tools, the sample size can be estimated.

It involves the consideration of factors such as effect size, significance level and statistical efficacy. Statistical software and online sample size calculator can help determine the appropriate sample size. Different research fields have different sample size requirements. Some fields need a larger sample size to ensure the reliability of research.