if are researchers is using data that are low in cost and save time which type of data is this likely to be?

Secondary data

Explanation:

The data collected form the first hand sources by using interviews and surveys is called primary data. The secondary data is gathered from surveys and studies which have already been conducted by other people. Mostly researchers use secondary data in their project as the researcher doesn't have to spend time, energy and money in collecting them. They can devote their time to research instead of worrying about gathering data.