Secondary data is any data that was gathered by someone other than the person using it. It contrasts with primary data, which is information gathered directly by the user from its original source. One example of research using secondary data is looking up the results of a telephone poll previously conducted by somebody else, as opposed to conducting a new telephone poll oneself, which would be an example of gathering primary data. While primary data is often preferred because it can be better... więcej
Salem Press Encyclopedia, 2021. 2p.