Design of a Statistical Study
Experimental Design
Sampling Techniques
Levels of Measurment
Data Sets
100
When a researcher deliberately applies a treatment before observing the responses.
What is an Experiment?
100
A process of randomly assigning subjects to different treatment groups.
What is Randomization?
100
A count or measure of an entire population.
What is a Census.
100
Categorized using names, labels, or qualities.
What is the Nominal Level of Measurement?
100
The collection of all outcomes, responses, measurements, or counts that are of interest.
What is Population?
200
A group in an experiment that is given no treatment.
What is a Control Group?
200
A technique where the subjects do not know whether they are receiving a treatment or a placebo.
What is Blinding?
200
A count or measure of part of a population.
What is Sampling?
200
Arranged in order, or ranked.
What is the Ordinal Level of Measurement?
200
A subset, or part, of a population.
What is a Sample?
300
A study where a researcher observes and measures characteristics of interest of part of a population but does not change existing conditions.
What is an Observational Study?
300
When a subject reacts favorably to a placebo when in fact the subject reacts the subject has been given a fake treatment.
What is the Placebo Effect?
300
The difference between the results of a sample and those population.
What is a Sampling Error?
300
Meaningful differences between data entries and be calculated.
What is the Interval Level of Measurement?
300
A numerical description of a population characteristic.
What is a Parameter?
400
A harmless, fake treatment, that is made to look like the real treatment.
What is a Placebo?
400
Groups of subjects with similar characteristics.
What are Blocks?
400
One in which every member of a population has an equal chance of being selected.
What is a Random Sample?
400
The added property that a zero entry is an inherent zero.
What is the Ratio Level of Measurement?
400
A numerical description of a sample characteristic.
What is a Statistic?
500
The subjects in a treatment or control group.
What are Experimental Units?
500
When an experimenter cannot tell the difference between the effects of different factors on the variable.
What is a Confounding Variable?
500
A sample in which every possible sample of the same size has the same chance of being selected.
What is a Simple Random Sample?
500
Determines which statistical calculations are meaningful.
What are the Levels of Measurement?
500
The branch of statistics that involves the organization, summarization, and display of data.
What is Descriptive Statistics?
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