What Is a Procedure Used to Equate Experimental and Comparison

question 22

Multiple Choice

What is a procedure used to equate experimental and comparison groups,but by itself is a poor substitute for randomization?

• A)time series designs
• B)before-and-after designs
• C)statistical controls
• D)matching

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Definitions:

Conference Rooms

Designated spaces in an office or facility set aside for meetings, seminars, or discussions.

Confidence Interval

An interval of values, obtained from data sampled, which is probable to encompass the value of an unspecified population parameter.

Confidence Level

The probability, expressed as a percentage, that a statistical interval will contain the true parameter value; commonly used in interval estimation.

Population Standard Deviation

A measure of the dispersion of all members in a population from the mean, indicating how spread out the values are.