An Experiment in Which Neither the Subjects nor the Experimenters

question 641

Multiple Choice

An experiment in which neither the subjects nor the experimenters administering the drugs know who is receiving the real drug or a placebo is called a __________ experiment.

• A)naturalistic
• B)random control
• C)placebo-blind
• D)double-blind

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Definitions:

Relative Frequency

The proportion between how often a specific value appears and the overall count of data points observed.

Midpoint

The middle point of a line segment, exactly equidistant from both ends.

Cumulative Percent Frequency

A measure used in statistics to describe the percentage of data points that fall within a certain category or below a specified value, accumulating from the start of the data set.

Total Number

The aggregate count or sum of all units or elements within a specified set or collection.