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.
Qualitative research involves looking in-depth at non-numerical data. Think of the word 'quality' when you think of qualitative data-you are taking a deep, quality look at a phenomenon. Compare qualitative research to quantitative research, which looks at patterns in numeric data. For example, if you want to study whether a gun buyback program helps reduce gun violence, you could look at crime rates before and after the program was implemented. That would be quantitative research.