multiple sum
1.Passbook of time deposits is a method of deposit where by lump-sum deposit and withdrawal time deposits in multiple currencies and maturities are handled in a single passbook.
2.The key about DRGs is how to select variables and methods. Firstly, the rank sum test and multiple Linear regression analysis ,was be used to study the influencing factors of inpatient’s costs. Then we established DRGs model by decision tree,which can supply the expense criteria for medicare organise and hospital.
