Answer:
questionnaire data
Explanation:
According to my research on different types of data, I can say that based on the information provided within the question they were gathering questionnaire data. This is data gathered from individuals filling out a document with a predefined set of questions. A Survey (which is what First Western Bank used) is a type of questionnaire.
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According to me the bank was gathering questionnaire data while sending surveys via mail to its savings accounts-only customers. The questionnaire method of collecting data or gathering information is the most easy and convenient way of gathering information.
Basically it is the survey research in which a set of standardized questions set for the people to get the information based or related to a certain topic. This questionnaire can be sent via post, email or by distribution.
