Data Redundancy Is Used to Establish Relationships Between Data but Is

question 118

True/False

Data redundancy is used to establish relationships between data but is never used to improve database performance.

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Definitions:

Expected Value

The long-run average value of repetitions of the same experiment or random process, calculated as the sum of all possible values weighted by their probabilities of occurrence.

Parameter

A numerical characteristic or feature of a population that is estimated using sample data.

Sample Variance

A measure of the dispersion or variability within a sample dataset, indicating how much the individual data points differ from the sample mean.

Population Variance

A measure of the dispersion of a set of data points in a population, calculated as the average of the squared distances of each data point from the population mean.