An Existence Check Is a Data Validation Check That ____

question 71

Multiple Choice

An existence check is a data validation check that ____.

• A)tests data items to verify that they fall between a specified minimum and maximum value
• B)identifies values that are questionable, but not necessarily wrong
• C)is performed on two or more fields to ensure that they are consistent or reasonable when considered together
• D)is used for mandatory data items

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Definitions:

Extraneous Factors

Variables that are not of interest in a study but could affect its outcome.

Experimental Units

Experimental units are the smallest divisions of the experimental subjects that can be independently assigned to treatment groups in a study.

Two-factor ANOVA

A statistical method used to analyze the effects of two independent variables on a single continuous dependent variable, allowing interaction effects to be studied.

Randomized Block Design

A statistical design for experiments that aims to reduce variation by grouping subjects that are similar into blocks before randomly assigning treatments.