When the Data Being Studied Are Gathered from a Published

question 98

Multiple Choice

When the data being studied are gathered from a published source, this is referred to as a(n) ________.

• A) existing data source
• B) observational data source
• C) experimental data source
• D) cross-sectional data source

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Definitions:

Spherical

Having the shape of a sphere; relating to or resembling a ball or globe.

Antifriction Bearings

Bearings designed to reduce friction between moving parts while supporting radial and axial loads, often using balls or rollers.

Bearing

A machine element that constrains relative motion to only the desired motion, reducing friction between moving parts.

Antifriction Bearings

A type of bearing designed to reduce friction between rotating parts by substituting sliding friction with rolling elements, such as balls or rollers.