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The relationship between a condition or variable and a particular consequence, with one event leading to the other.
The subjects in an experiment who are not introduced to the independent variable by the researcher.
A factor that is held constant to test the relative impact of an independent variable.
A relationship between two variables in which a change in one coincides with a change in the other.
The variable in a causal relationship that is subject to the influence of another variable.
The subjects in an experiment who are exposed to an independent variable introduced by a researcher.
The variable in a causal relationship that causes or influences a change in a second variable.
The midpoint or number that divides a series of values into two groups of equal numbers of values.
A research technique in which an investigator collects information through direct participation and/or by closely watching a group or community.
An explanation of an abstract concept that is specific enough to allow a researcher to assess the concept.
Research that relies on what is seen in field or naturalistic settings more than on statistical data.
A selection from a larger population that is statistically representative of that population.
A systematic, organized series of steps that ensures maximum objectivity and consistency in researching a problem.
A variety of research techniques that make use of previously collected and publicly accessible information and data.
A study, generally in the form of an interview or questionnaire, that provides researchers with information about how people think and act.
1936 Literary Digest Presidential Poll
In 1936 Literary Digest polled 2.4 million people consisting of its readers, registered auto owners, and telephone users. The digest readers income were well above national averages. The election was between Alf Landon and FDR. The poll showed that Landon would win by popular vote.
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