Pohjaaineisto
Pohjaaineisto, also known as primary data or raw data, refers to the original data collected from a firsthand source. This type of data is unprocessed and unanalyzed, providing the foundation for further research or analysis. Primary data is often collected through surveys, interviews, observations, or experiments, and it is unique to the specific study or research project. It is considered more reliable and valid than secondary data because it is gathered directly from the source, reducing the risk of errors or biases that may occur during the data collection process. Primary data is essential in research as it allows for a deeper understanding of the subject matter and can provide insights that are not available in existing literature or databases. However, collecting primary data can be time-consuming, resource-intensive, and may require specialized skills or equipment. Therefore, researchers often rely on secondary data when primary data is not feasible or available.