Martha Sends Out 300 Mail Surveys to a Representative Group

question 21

Multiple Choice

Martha sends out 300 mail surveys to a representative group of respondents. Of these, 175 fill out the survey and mail it back to her. She realizes that those who responded were significantly more educated and had higher incomes than the general population. This is an illustration of:

• A)response error.
• B)nonresponse error.
• C)sampling error.
• D)interest error.
• E)representation error.

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Definitions:

Communications

The process of transferring or exchanging information between entities using common systems, protocols, or methods.

Master/Slave Protocol

A communication protocol in which one device (master) controls one or more other devices (slaves).

Polling

A network access method where a master controller manages the communication process by interrogating each slave controller under it to determine whether the slave has any information to send.

Collision Detection

The process of identifying when two or more entities in a digital environment, such as packets in a network or objects in a simulation, coincide or interact with one another.