The information systems organization, ISACA, conducts an annual survey of cyber security at firms from around the world. ISACA sends survey questionnaires via email to all professionals that hold ISACA's Certified Information Security Manager designation. Over 1,500 professionals participated in the 2015 cyber security survey, of which 766 responded to a question on whether or not they expect to experience a cyber attack (e.g., a Malware, hacking, or phishing attack) against their firm in the coming year. About 82% of the respondents expect to experience a cyber attack during the year (State of Cyber security: Implications for 2015, ISACA and RSA Conference Survey).
a. Identify the population of interest to ISACA.
b. Identify the data-collection method used by ISACA.
Are there any potential biases in the method used?
c. Describe the variable measured in the ISACA survey. Is it quantitative or qualitative?
d. What inference can be made from the study result?