Stats 1.4 Experiment Design

The conditions to be compared in an experiment. These are randomly assigned to subjects.

• lurking variable

• treatments

• subjects

• Placebo

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CCSS.HSS.IC.B.3

The conditions to be compared in an experiment. These are randomly assigned to subjects.

• lurking variable

• treatments

• subjects

• Placebo

Tags

CCSS.HSS.IC.B.3

The available group of people (or animals, plants or objects) to which treatments are applied in an experiment.

• double blind

• treatments

• control group

• subjects

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CCSS.HSS.IC.B.3

In an experiment, a randomly selected group of subjects that gets no treatment, gets a placebo, or gets an established or standard treatment.

• control group

• subjects

• treatments

• observational study

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CCSS.HSS.IC.B.3

A research study in which available subjects are randomly assigned to two or more different treatments in order to compare how responses to the treatments differ.

• observational study

• experiment

• sample survey

• placebo

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CCSS.HSS.IC.B.3

A sham or empty treatment that to subjects of an experiment appears to be the real treatment.

• response variable

• subjects

• placebo

• lurking variable

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CCSS.HSS.IC.B.3

An experiment that is both subject blind and evaluator blind.

• placebo

• double blind

• response variable

• control group

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CCSS.HSS.IC.B.3

In an experiment, the outcome to be measured.

• response variable

• lurking variable

• subjects

• treatments

A statistical study in which the conditions to be compared are already present in the subjects that are observed.

• control group

• experiment

• observational study

• sample survey

Tags

CCSS.HSS.IC.B.3

Which of the following is a key distinction between well designed experiments and observational studies?

• More subjects are available for experiments than for observational studies.

• Ethical constraints prevent large-scale observational studies.

• Experiments are less costly to conduct than observational studies.

• An experiment can show a direct cause-and-effect relationship, whereas an observational study cannot.

• Tests of significance cannot be used on data collected from an observational study.

Tags

CCSS.HSS.IC.B.3