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I need help with an essay that describes survey research and data collection in criminal justice research. It must also describe the purpose of sampling as part of the research process. Identify the types of reliability and validity as they are applied to criminal justice research. Discuss the importance of ensuring that data collection methods and instruments are both reliable and valid. It must address each of the following in the paper: 1  Identify the various types of survey research utilized in the field of criminal justice. 2  Explain the advantages and disadvantages of: 3 In person surveys 4 Telephone surveys 5 Computer-based surveys 6 Focus group surveys