A Representative Sample Is One Whose

question 38

Multiple Choice

A representative sample is one whose:

• A) distribution is approximately normal as it gets larger.
• B) sample is drawn randomly.
• C) distribution approximately matches that of the population, for a subset of observed, independent variables.
• D) distribution exactly matches the population distribution for the outcome variable.

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Definitions:

Counter Rung

A ladder logic component used in PLC programming to count occurrences of an event.

CTU

In control systems, it typically stands for "Count Up", a function block used in PLC programming for counting events.

Count-Up Counter

A device or program that tallies an increasing count, often used for tracking occurrences or events.

Non-Retentive Counters

Counting mechanism in automation systems that do not retain their count value in the event of a power loss or system reset.