Sample size in research refers to the number of participants or elements included in a study. It is important to have an appropriately sized sample in order to draw accurate and reliable conclusions from the research findings. The sample size is determined based on the research question, study design, statistical methods, and desired level of confidence and precision. A larger sample size generally leads to more reliable results, but it can also be costly and time-consuming to collect data from a larger sample. As a result, researchers often use statistical techniques to calculate the sample size needed to achieve the desired level of confidence in their study results.
