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Categorical variable
variable that varies by type or kind
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Cause-and-effect relationship
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descriptive research
research that attempts to describe some phenomenon, event, or situation.
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Experimental research
researcher tries to show a cause-effect relationship by changing the independent variable
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Method of data collection
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Natural manipulation research
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Nonexperimental quantitative research
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Nonnumerical data
data that consists of pictures, words, etc. that cannot be expressed as a number.
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Numerical data
data that can be expressed as a number.
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Qualitative research
Based on nonnumerical data
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Quantitative research
a research study that is based on numerical data (countable).
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Variable
a characteristic or phenomenon that can vary accross or within organisms, situations, or environments.
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Quantitative variable
variable that varies by degree or amount.
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