State the major strengths and weaknesses of secondary analysis of existing data.
On strength of secondary analysis is that data are readily available and inexpensive. Another is that because the researcher often does not collect the data personally, the chances of bias may be reduced. However, secondary analysis had inherent problems. For one thing, the data may be incomplet, unauthentic, or inaccurate. A second issue is that the various data from which content analysis is done may not be strictly comparable with one another, and coding this data-sorting, categorizing, and organizing them into conceptual categories-may be difficult.