Control groups
Controlled variables
All those things that must be kept the same during the investigation to produce a valid, fair test.
The control group is considered
Baseline data
known as constants
Controlled variables
Generates data under abnormal/unknown condition
Experimental (group)
Generates data under treated/manipulated conditions
Experimental (group)
Results are compared to the ones of the control group to help determine possible impacts of a treatment/manipulation
Experimental (group)
negative control group
Not exposed to the experimental treatment or any treatment known to have an effect (Negative control groups help identify outside influences which may be present that were not unaccounted for, such as contaminants.)
What are negative and positive control groups used for
can be used to validate experimental procedures
positive control group
group where an effect is expected
Controlled variables are used to
help isolate and identify the impact of an intentional change/treatment
What are the different types of control groups
negatives and positives
control group
the group that does not receive the experimental treatment.