Question:A multi-dimensional data set is sparse if: 

A The data to be analysed is less in volume 
B If a relatively high percentage of the possible combinations (intersections) of the members from the data set's dimensions contain missing data 
C If a relatively high percentage of the possible combinations (intersections) of the members from the data set's dimensions contain invalid data 
D If a relatively high percentage of the possible combinations (intersections) of the members from the data set's dimensions contain valid data 
E If a relatively high percentage of the possible combinations (intersections) of the members from the data set's dimensions contain outdated data 

+ Answer
B 

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Md. Habib Ullah

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