If There Is Not Random Assignment,but There Is a Control

question 53

Short Answer

If there is not random assignment,but there is a control group and/or multiple measures,a research study can be said to be a(n)_______________.

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Definitions:

Oxygen

A chemical element with symbol O and atomic number 8, essential for most forms of life to breathe.

Nonpoint Source

Pollution originating from diffuse areas rather than identifiable, discrete sources.

Logged Area

A region where trees have been cut down for timber or forestry purposes, often leading to changes in the ecosystem.

Sewage Treatment

The process of removing contaminants from wastewater, primarily from household sewage, to produce an environmentally safe fluid waste stream and a solid waste suitable for disposal or reuse.