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24 Cards in this Set
- Front
- Back
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data reduction |
summarizing many scores with a few statistics |
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descriptive statistics |
the branch of stats concerned with summarizing distribution of single variable or measuring the relationship between 2 or more variables |
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hypothesis |
a statement about the relationship between variables that is derived from theory |
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inferential statistics |
branch of statistics concerned with making generalizations from samples to populations |
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population |
total collection of all cases where the researcher is interested |
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variable |
traits that can change from trait to trait |
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alternate hypothesis |
The research hypothesis. “Rejection” of the null builds up evidence for the research hypothesis
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null hypothesis |
What is actually tested in a statistical test
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continuous |
variables are measured in a unit that can be subdivided infinitely.
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discrete |
variables are measured in units that cannot be subdivided.
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hypothesis |
a statement that describes the relationship between two or more variables.
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nominal |
Scores are labels only, they are not numbers.
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ordinal |
Scores have some numerical quality and can be ranked.
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interval- ratio |
Scores are numbers.
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independent variable |
are those that are manipulated. Designated as X.
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dependant variable |
variables are only measured or registered. Designated as Y.
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multivirate |
descriptive statistics describe the relationships between three or more variables.
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bivrate |
descriptive statistics describe the strength and direction of the relationship between two variables.
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range |
difference between largest and smallest observations
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who created the normal curve |
carl guss |
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statistics |
are the mathematical characteristics of samples |
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parameters |
are the mathematical chractersitcs of populations |
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statistics |
are used to estimate parameters |
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representative |
the sample has the same characteristics as the population |
