# data mining

## Quiz by blue meem

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9 questions

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- Q1The procedure starts with the full set of attributes?Stepwise forward selectionCombination of forward selection and backward eliminationDecision tree inductionStepwise backward elimination30s
- Q2Calculate value Min-max normalization. Let income range $10,000 to $80,000 normalized to [0.0, 1.0]. a value of $75,500 for income is transformed to0,503710,968220,715510,2367860s
- Q3a large data set to be represented by a much smaller random data sampleSamplingClusteringEqual-widthEqual-frequency30s
- Q4…………………..the data are replaced by alternative, smaller representations using parametric models or nonparametric models .Numerosity reductionDimensionality reductionCompletenessBelievability30s
- Q5………………..Fill in missing values, smooth noisy data, identify or remove outliers, and resolve inconsistenciesData integrationData Transformation and Data DiscretizationData reductionData cleaning30s
- Q6smooth by fitting the data into regression functionsClusteringRegression30s
- Q7Covariance is similar to correlation: : If CovA,B > 0, then A and B both tend to be larger than their expected values.Negative covariancePositive covarianceIndependence30s
- Q8Combines data from multiple sources into a coherent storeمخزن متجانسData IntegrationData CleaningData Transformation and Data DiscretizationData Reduction30s
- Q9هل تحبنا استاذة لندا!ممكناحتمالاكيد مرة ثانيةاكيييد30s