A bank 'xyz' wants to know about its popularity among the residents of a city 'ABC' on the basis of number of bank accounts each family has and the average monthly account balance of each person. Briefly describe the steps to be taken for collecting data and what results can be checked through processing of the collected data.

1. Conduct a survey of households in city 'ABC' to gather data on the number of bank accounts each family holds and the average monthly account balance per person.
2. Ensure the accuracy and completeness of the collected data by cross-checking and validating responses.
3. The results that can be checked through processing of the collected data are as follows:
   1. Average number of bank accounts per family for bank 'xyz'.
   2. Average monthly account balance per person for bank 'xyz' customers.
   3. Popularity index of bank 'xyz' compared to competitor banks based on these metrics.
   4. Demographic profiles of bank xyz's account holders, including age distribution, income brackets, and other relevant characteristics.
   5. Trends and patterns in account ownership and account balances across different demographic segments.