A Researcher Computes the Definitional Formula for SS and Finds

question 55

Multiple Choice

A researcher computes the definitional formula for SS and finds that .If this is a sample of 12 scores,then what would the value of sample variance be using the definitional formula?

• A) 3.7
• B) 4.0
• C) 44
• D) not possible to know because the scores are not given

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Definitions:

Double-Blind Procedure

A study or experiment design in which both the participants and the experimenters do not know who is receiving a particular treatment, to prevent bias.

Placebo Control Procedure

A method used in research where a group of participants receives a sham treatment, allowing for comparison with a group receiving the actual treatment to determine its effect.

Stereotaxic Procedure

A surgical technique that allows precise positioning of instruments or lesions within the brain using a three-dimensional coordinate system.

Single-Blind Procedure

A research experiment in which only the participants do not know which group (control or experimental) they belong to.