Data Mining MCQs

Data Mining

1) The _____________ accessed is usually a different version from that of the original operational database.
A) data                 B) Query              C) Output            D) None of these
Correct Ans:  Data

2) The ______________  of the data mining query probably is not a subset of the database.
A) data                 B) Query              C) Output            D) None of these
Correct Ans:  Output

3) A ________________ makes a prediction about values of data using known results found from different data.
A) Classification Model  B) Regression Model      C) descriptive model      D) predictive model
Correct Ans: Predictive Model

4) A ______________  identifies patterns or relationships in data.
A) Classification Model  B) Regression Model      C) descriptive model      D) predictive model
Correct Ans: Descriptive  Model

5) ______________  maps data into predefined groups or classes.
A) Classification                                B) Regression                    C) Clustering                      D) Summerisation
Correct Ans: Classification

6) _______________ is a type of classification where an input pattern is classified into one of several classes based on its similarity to these predefined classes.
A) Regression                    B) Pattern recognition                   C) Association Rule          D) None of these
Correct Ans: Pattern Recognition

7) Regression is used to map a data item to a real valued prediction variable
A) Classification                                B) Regression                    C) Clustering                      D) Summerization
Correct Ans: Regression

8) ______________ involves the learning of the function that does  mapping.
A) Classification                                B) Clustering                      C) Regression                    D) Summerization
Correct Ans: Regression

9) _______________  assumes that the target data fit into some known type of function.
A) Regression                    B) Classification                 C) Clustering                      D) Summerization
Correct Ans: Regression

10) _____________ , is the value of an attribute is examined as it varies over time.
A) Time series Analysis                  B) Classification                 C) Association                    D) Prediction
Correct Ans: Time Series Analysis

11) _______________ is similar to classification except that the groups are not predefined, but rather defined by the data alone.
A) Time series Analysis                  B) Clustering                      C) Association                    D) Prediction
Correct Ans: Clustering

12) A special type of clustering is called________________.
A) Segmentation              B) Generalization             C) Characterization          D) None of these.
Correct Ans: Segmentation

13) ______________ maps data into subsets with associated simple descriptions.
A) Sequential Analysis   B) Summarization            C) Link Analysis                 D) All of these
Correct Ans: Summarization

14) The KDD process is often said to be ______________.
A) Useful             B) Potentially useful       C) nontrivial        D) All of these
Correct Ans: All of these

15) Following is the important implementation issues associated with data mining.
A) Human interaction     B) overfitting     C) Outliers           D) All of these
Correct Ans: All of These

16) ROI means ________________.
A) Return on investment              B) Return of information              C) Both A & B     D) None of these
Correct Ans: Return on investment

17) DMQL means _______________.
A) Document Model Query language      B) data mining query language
c) Data mining query level                            D) none of these
correct Ans: Data mining query language

18) A _____________ is a collection of data usually associated with some organization or enterprise.
A) files                  B) reports                            C) Database                        D) query
Correct Ans: Database

19) The query language may be based on ______________.
A) relational algebra                       B) Calculus                          C) both A & B                     D) None of these.
Correct Ans: Both A & B

20) ______________ have been used in many computer science and database areas.
A) Fuzzy sets      B) Queries           C) Fuzzy logic     D) none of these
Correct Ans: Fuzzy sets

21) _____________ is often defined as finding hidden information in a database.
A) Data warehouse B) Data mining C) Data Science D) Data Scanning
Correct Ans: Data Mining

22) Data mining involves many different algorithms to accomplish different tasks.
A) Data warehouse B) Data mining C) Data Science D) Data Scanning
Correct Ans: Data Mining

23) Data mining algorithms can be characterized as consisting of three parts:
A) Model B) Preference C) Search D) All of the above
Correct Ans: All of the above