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Types of Experiments
The Experiment
Population
Conclusion
Samples
100
researcher does not influence responses
What is Observational study
100
something that researchers administer to experimental units
What is Treatment
100
in which no treatment is applied
What is Control Group
100
a count or measure of an entire population
What is Census
100
the number of subjects in a study, is another important part of experimental design
What is Sample Size
200
a researcher deliberately applies a treatment before observing the responses.
What is Experiment
200
which is a harmless, fake treatment, that is made to look like the real treatment
What is Placebo
200
subjects in treatment and control group
What is Experimental units
200
difference between a sample and population
What is Sampling error
200
one in which every member of the population has an equal chance of being selected
What is Random Sample
300
use of mathematical or physical model to reproduce the conditions of a situation or process
What is Simulation
300
subjects do not know they are receiving a treatment of placebo
What is Blinding
300
subjects change behavior because they know they are in an experiment
What is Hawthorne effect
300
occurs when an experimenter cannot tell the difference between the effects of different factors on the variable
What is Confounding variable
300
a sample which every possible sample of the same size has the same chance of being selected
What is Simple Sample
400
an investigation of one or more characteristics
What is Survey
400
neither the experimenter nor the subjects know if the subjects are receiving a treatment or a placebo.
What is Double-blind experiment
400
paired up according to similarity
What is Matched pair design
400
a numerical description of a population characteristic.
What is Parameter
400
when the population falls into naturally occurring subgroups, each having similar characteristics, a cluster sample may be appropriate. To select a cluster sample, divide the population into groups, called clusters, and select all the members in one or more (but not all) of the clusters.
What is Cluster Sample
500
subjects are assigned to different treatment groups through random selection
What is Completely randomized design
500
replication of an experiment
What is Replication
500
groups of subjects with similar characteristics
What is Blocks
500
a numerical description of a sample characteristic
What is Statistic
500
each member of the population is assigned a number. The members of the population are randomly selected, and then sample numbers are selected at random intervals.
What is Systematic sample