A "data set" refers to a collection of information gathered through observation, experimentation, surveys, or other research methods.
Descriptive statistics involve organizing, summarizing, and presenting data in order to describe key characteristics or patterns.
Inferential statistics are used to draw conclusions or make predictions about a population based on a sample of data.
Outliers are extreme scores that differ significantly from the majority of other scores in a data set. They can have a strong impact on statistical analyses and interpretations.