MIS 2502 Final: MIS2502 Final Decision Tree Notes

• School: Temple University
• Department: Management Information Systems
• Course: MIS 2502
• Professor: David Schuff

Document Summary

Mis decision tree notes: decision tree analysis, determine the probability of an event happening based on a series of variable values, be able to read tree, there are statistics that show c. i. When a predictor variable maximizes distinct outcomes: (if age is a predictor, we should see that older people buy; younger people don"t). c. ii. You have a bunch of predictors that need to end up in one of two possible outcomes. Ie: black/white, no loan/loan, etc: given a formula, compute and interpret the chi-squared statistic for a split variable. (this includes determining what the expected values should be. ) e. i. Ie: change promspend <50 to 500/500 and >=50 to. Are the original numbers different enough from the distributions? e. iii. Promtime has larger chi-square because those values have a greater difference from 500 and 750. e. iv. Expected values calculation: average of the observed values. e. iv. 1. Ie: 4000 and 5200: expected value is 4600 e. v.