Toys "R" Us Collects a Vast Amount of Data Through

question 136

Multiple Choice

Toys "R" Us collects a vast amount of data through its Web site,direct mailings,and retail stores.To be useful,all of these data would be centralized in a(n) :

• A) data mart
• B) decision matrix
• C) data warehouse
• D) decision support system
• E) data cluster

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Definitions:

Mean Value

Mean value is the average of a set of numbers, calculated by dividing the sum of all values by the quantity of numbers.

Error Term

A variable in a statistical model that captures the difference between observed and predicted values.

Linear Relationship

A relationship between two variables where the change in one variable is directly proportional to the change in another.

Scatter Chart

A type of graph used to display values for two variables for a set of data, showing the relationship between them.