Q1) Choose ONE correct answer from each of the following McQs of data is a major
ID: 3727608 • Letter: Q
Question
Q1) Choose ONE correct answer from each of the following McQs of data is a major issue in the data mining methods. a noise b. uncertainty cincompleteness d. all of the above 2. Clustering is learning process that is used to discover g the data. a an active b. a supervised c an unsupervised d. a semi-supervised Measure of data quality is 3. a. inaccuracy c. unreasonableness 4. Data conflicts are resolved during data a. Cleaning b. Reduction c. Transformation d. Integration Usually values of objects into bins. a. Box plot b. matrix plot c. Histogram d. Scatter plot Data transformation includes a. A process to change data from a detailed level to a summary le b. A process to change data from a summary level to a detailed le c. Joining data from one source into various sources of data. d. Separating data from one source into various sources of data. 5. shows the distribution of values of a single var 6.Explanation / Answer
1. option D
noise, uncertainiy and incompleteness of data are major issues in data mining methods
2.option C
unsupervised learning process-unknown number of classes
3.option A
inaccuracy is measure of data quality
4.option D:
data integration: during this phase data from various sources are combined and conflicts are identified and resolved;Example: currency in rupees, currency in dollars etc.
5. option A
Box plot :used to represent how the values of single variable are distributed such as minimum,maximum,median, first and third quartile.
6. option A
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