Fall 2012

Sam (Sang-Jin) Han, Ph.D

13. Decision Support Systems Mongolian International University

Project #2 T-test and Chi-Square Test TChi- Make an example of T Test and Chi-square test. Chi(Examples should be related to business/management) - Make a group of three people. Every body should present. - Prepare 5 minutes of presentation. Prepare Q & A. - You MUST submit the presentation file by December 3rd 8:30AM. (-10 point will be deducted and additional -1 point/hour will be deducted if your submission are getting late) T-test (Followings should be included): 1. Problem description. 2. Choose the right test (paired or independent). State if the two conditions for T Test are satisfied. 3. H0 and Ha (Specify one tailed or two tailed) 4. Sample size (N) and P-value should be included in the result. P5. Conclusion and references ChiChi-Test: 1. Problem description. 2. H0 and Ha 3. Degree of freedom and P-value should be included in the result P4. Your conclusion and References

ChiChi-Square Test: degree of freedom

DOF=number of categories -1

Decision Support Systems Decision Tree RuleRule-based System

Business Information System, MIU, Sam Han

DSS-ES connections
These two can be completely different. The differences are technological as well as managerial. But they complement each other, creating powerful and integrated computer based systems that can improve managerial decision making capabilities .
(Differences b/w DSS and ES) Objective Who makes the decisions (recommendations) Major orientation Major query direction Nature of support Characteristics of problem area Content of database Reasoning capability Manipulation method DSS ES Assist Human Decision Makers Replicate (mimic) human advisers and replace them The human and the system The system Decision making Human query the machine Personal, groups, and institutional Complex,