DATA MINING AND STAT LEARN COMPREHENSIVE EXAM SCRIPT COMPLETE QUESTIONS VERIFIED

DATA MINING AND STAT LEARN COMPREHENSIVE EXAM SCRIPT COMPLETE QUESTIONS
VERIFIED SOLUTIONS




Question:
Column.

Answer:
Attribute, feature, covariate, predictor, factor, variable



Question:
Response/outcome.

Answer:
The 'answer' for each data point



Question:
Structured data.

Answer:
Data that can be stored in a structured way



Question:
Quantitative.

Answer:
Numbers with meaning



Question:
Categorical.

,Answer:
Numbers without meaning



Question:
Binary data.

Answer:
Can only take one of two values



Question:
Unstructured data.

Answer:
Data that is not easily described and stored



Question:
Unrelated data.

Answer:
No relationship between data points



Question:
Time series data.

Answer:
Same data recorded over time



Question:
Validation.

Answer:

, Measuring the quality of a model



Question:
Real effect.

Answer:
Real relationship between attributes and response, same in all data sets



Question:
Random effect.

Answer:
Random, but looks like a real effect, different in all data sets



Question:
Model fit.

Answer:
Captures real and random effects



Question:
Heuristic.

Answer:
Fast, good but not guaranteed to find absolute best solution



Question:
Expectation-maximization (EM).

Answer:
An iterative method to find maximum likelihood or maximum a posteriori estimates of parameters
in statistical models