Which of the following are three methods of obtaining sales data from buyers and sellers?

The identification of mail questionnaires, telephone interviews, and personal interviews as methods of obtaining sales data from buyers and sellers aligns with commonly used techniques in data collection. Each of these methods allows for direct interaction with buyers and sellers, facilitating the gathering of qualitative and quantitative information about real estate transactions.

Mail questionnaires are beneficial because they can reach a broad audience and allow respondents to complete them at their convenience, potentially leading to more considered responses. Telephone interviews provide a more personal touch, enabling follow-up questions and clarification, which can lead to a deeper understanding of the buyer’s or seller’s perspective. Personal interviews are particularly effective for gathering detailed information, as they allow for in-depth discussions that can uncover insights that might not be captured through standardized questionnaires.

The other options may involve some valid methods for collecting data, but they do not encompass the same range of traditional and widely accepted practices. For example, while online surveys can be effective, they may not capture the views of those who are less technologically inclined. Similarly, public records and online databases, while useful for statistical analysis and background information, do not provide the direct insights from buyers and sellers like the chosen methods do.