Purchase Data Collected at the Point of Sale That Goes

question 49

Multiple Choice

Purchase data collected at the point of sale that goes into a huge database known as:

• A) a spreadsheet
• B) a computerized processing unit
• C) a data holding cell
• D) a data warehouse
• E) a database chain

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Definitions:

Degrees of Freedom

The number of independent values or quantities that can be assigned to a statistical distribution, often affecting the outcome of statistical tests.

Alpha Level

A threshold set in statistical hypothesis testing, below which a null hypothesis is rejected, often set at 0.05.

One-Tailed Statistical Test

A hypothesis test that predicts the direction of the expected difference or relationship between variables.

Ratio Scale

A scale of measurement in which there is an absolute zero point, indicating an absence of the variable being measured. An implication is that ratios of numbers on the scale can be formed (generally, these are physical measures such as weight or timed measures such as duration or reaction time).