What Techniques Do Researchers Use to Help Control for Regression

question 60

Multiple Choice

What techniques do researchers use to help control for regression toward the mean and placebo effects

• A) control groups, random assignment, and statistical adjustment 
• B) double-blind testing, correlational research, and random sampling 
• C) longitudinal testing, random assignment, and naturalistic observation 
• D) cross-sectional studies, statistical adjustment, and case-study research

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Definitions:

Tolerance

The amount of variation from a standard value that is permissible.

Impedance

The total opposition a circuit presents to the flow of alternating current, combining both resistance and reactance.

Low-pass Filters

Electronic circuits that pass signals with a frequency lower than a certain cutoff frequency and attenuate signals with frequencies higher than the cutoff frequency.

Inductor

A passive electrical component used in circuits to store energy in a magnetic field when electric current flows through it.