C743 data mining 1 - Study guides, Class notes & Summaries
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C743 Data Mining 1 exam 2023 with 100% correct answers
- Exam (elaborations) • 22 pages • 2023
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Types of Data Mining correct answersDescriptive (exploratory) 
Predictive (Explanatory) 
Text 
 
Phases of Data Mining correct answers1) define aims 
2) list existing data 
3) collect data 
4) explore and prepare data 
5) segment pop 
6) draw up and validate predictive models 
7) deploy Models 
8) train Model users 
9) monitor models 
10) enrich Models 
 
Data Preparation Functions correct answers- Longest stage of data study. Done to decrease workload and increase efficiency of statistical anal...
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C743 Data Mining 1 - Terminology exam 2023 with 100% complete solutions
- Exam (elaborations) • 33 pages • 2023
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Cramer V Test - Used to indicate how strongly associated two different categorical/nominal variables are with each other. 
- Based on Pearson Chi-Square statistic 
- Test is performed on contingency tables 
- Cramer's V value is between 0 & 1. 
- Values closer to 0 indicate little association between variables. 
- Values closer to 1 indicated strong association between variables. 
- In 2x2 contingency table, Cramer's V = Phi coefficient 
- Can be used on tables with size > 2x2 (i.e. 3x3, 3...
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