can ensure that it is reliable as you know the exact procedure and can replicate it. also, more likely to be up-to-date and so is applicable to current life
3 of 8
give 2 weaknesses of primary data
can be time consuming and costly especially if you want to obtain a large sample. also, the data can be interpreted in light of the aim (subjectivity)
4 of 8
define secondary data
second hand analysis of pre-existing data by someone other than the researcher
5 of 8
give an example of secondary data
using the net to find published sources of data
6 of 8
give 2 strengths of secondary data
quicker and cheaper as pre-published sources of data. also, can easily obtain a larger amount of data than you could with primary research
7 of 8
give 2 weaknesses of secondary data
not reliable as you would not know how the originally research was carried out and whether it was reliable. also, less likely to be up-to-date and may not be applicable to current day
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