A private investigator â also known as a PI, Private Detective or Private Eye â is someone that is hired to undertake an investigation. Most states require PIs to be trained and licensed. Investigators often have a law enforcement and/or a military background. Back to Top.
Quantitative vs Qualitative. Quantitative and Qualitative are two terms between which a variety of differences can be identified. Quantitative has a lot to do with the quantity of an object or a person. On the other hand, qualitative has a lot to do with the quality or the attribute of an object or a person.
Examples of quantitative research include experiments or interviews/questionnaires that used closed questions or rating scales to collect information. Applications of Quantitative and Qualitative Data. Qualitative data and research is used to study individual cases and to find out how people think or feel in detail. It is a major feature of case studies. Quantitative data and research is used to study trends across large groups in a precise way. Examples include clinical trials or censuses. When to use qualitative vs. quantitative research?