Occurs when an experimenter cannot tell the difference between the effects of different factors on the variable
What is Confounding Variable
100
Draws inferences from a sample to a population where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints
What is Observational Study
100
The subjects in the treatment and control groups
What is Experimental Units
100
Subjects are assigned to different treatment groups through random selection
What is Completely Randomized Design
100
A count or measure of part of a population and is more commonly used in statistical studies
What is Sampling
200
A technique where the subjects do not know whether they are receiving a treatment or a placebo. The experimenter is informed after all the data has been collected.
What is Blinding
200
A procedure carried out to support, refute, or validate a hypothesis
What is Experiment
200
Which is a harmless, fake treatment, that is made to look like the real treatment
What is Placebo
200
Subjects are paired up according to a similarity
What is Matched-Pairs Design
200
A count or measure of an entire population
What is Census
300
Neither the experimenter nor the subjects know if the subjects are receiving a treatment or a placebo. The experimenter is informed after all the data has been collected
What is Double-Blind Experiment
300
The group in an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do
What is Treatment Group
300
The use of a mathematical or physical model to reproduce the conditions of a situation or process
What is Simulation
300
Groups of subjects with similar characteristics
What is Blocks
300
The difference between the results of a sample and those of the population
What is Sampling Error
400
A process of randomly assigning subjects to different treatment groups
What is Randomization
400
The manner in which someone behaves toward or deals with someone or something
What is Treatment
400
An investigation of one or more characteristics of a population
What is Survey
400
Divides the subjects with similar characteristics into blocks, and with each block. Randomly assign subject to treatment groups.
What is Randomized Block Design
400
One in which every member of the population has an equal chance of being selected
What is Random Sample
500
The repetition of an experiment under the same or similar conditions
What is Replication
500
The group in an experiment or study that does not receive treatment by the researches and is then used as a benchmark to measure how the other tested subjects do
What is Control Group
500
Occurs when a subject reacts favorably to a placebo when in fact the subject has been given a fake treatment
What is Placebo effect
500
The number of subjects in a study
What is Sample Size
500
A sample in which in which every possible sample of the size has the same chance of being selected