We take those observations and describe them using stats. It is important so that we can reproduce data or finding that other researchers have reported.
Stat methods serve as scientific investigation by organizing and interpreting data.
A piece of the population, but should be representative of the entire population. Often we will use the term sample to represent a set of scores made by our subset of people or animals. After data is collected, you use statistic methods to collect the data. Such as a mean, median mode, tables, graphs. Inferential statistics consists of techniques that take raw scores and makes generalizations about a population.