![]() ![]() Official statistics may not reflect all incidents, but only those reported to the authorities.Official definitions of concepts being studied by researchers may differ from sociological definitions.Secondary data is helpful for historical & comparative purposes.Official statistics are seen as being highly reliable. ![]() Saves time, money, and effort, when investigating crime, marriage, divorce, and suicide.Secondary Data: data already existing (official statistics, reports, personal letters, and diaries – at archives, libraries). There may be difficulty gaining access to the target group, in terms of danger, and availability (may be dead).Time-consuming and expensive to conduct.The researcher has control over the reliability, validity, and representativeness.The researcher has control over how the data is collected, the purpose, and who its collected for.Primary Data: information collected personally by a researcher. Primary, Secondary, Quantitative and Qualitative Data ![]()
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