Modeling the construction of an efficient customer club for the quantitative and qualitative development of increasing customers in the banking system by Ali Taher khani kojariha, Younos Vakil Alroaia

“…The statistical population in the qualitative section includes 11 specialists and experts, managers, and vice-presidents of the bank, and experts in the field of management model and customer club, selected through purposeful sampling and snowball; and the statistical population in the quantitative section includes 385 people from all members of the Saderat Bank's customer club, selected using Cochran's formula as a sample and by simple random sampling. …”
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