State and briefly discuss three types of computer based surveys?

1. Online surveys: Online surveys are conducted through web-based platforms or email. Participants can access the survey through a link and respond to the questions using their computer or mobile device. Online surveys are cost-effective, easily distributed to a large number of participants, and can include various question types such as multiple-choice, open-ended, or rating scales. They also allow for automated data collection and analysis.

2. Mobile surveys: Mobile surveys are specifically designed to be completed on smartphones or tablets. They take advantage of the widespread use of mobile devices and allow participants to respond to surveys on the go. Mobile surveys often utilize mobile apps or responsive web design to ensure compatibility with different screen sizes and operating systems. They are particularly useful for collecting real-time data or location-based information.

3. Computer-assisted telephone interviewing (CATI): CATI surveys involve using computer software to conduct telephone interviews. Interviewers use a computer program that displays the survey questions on the screen, and they enter the participant's responses directly into the system. CATI surveys offer advantages such as standardized data collection, real-time monitoring of interview progress, and the ability to skip or branch questions based on previous responses. They are commonly used for market research or opinion polls. However, CATI surveys may be limited by potential biases introduced by the interviewer's tone or manner of asking questions.