In Data Mining Where Huge Data Sets Are Being Explored

question 32

True/False

In data mining where huge data sets are being explored to discover relationships among a large number of variables,the best-subsets approach is more practical than the stepwise regression approach.

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Definitions:

Molecular Ion Peak

The peak in a mass spectrum that represents the molecule of the sample as a positively charged ion.

Fragment Peaks

Fragment peaks in mass spectrometry refer to the peaks that represent the masses of fragments from the molecule being ionized and broken apart, aiding in the determination of molecular structure.

M/Z Fragment

Refers to the mass-to-charge ratio of ions observed in mass spectrometry, crucial for identifying and characterizing molecules based on their fragmentation patterns.

Molecular Ion Region

The part of a mass spectrum that shows the peaks corresponding to the molecular ions, providing information about the molecular weight of a compound.