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10 Cards in this Set
- Front
- Back
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What is a correlation?
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When one trait or behavior accompanies another
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What does it allow you to determine?
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It allows us to determine relationships between traits & predict future traits
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How are they represented
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Graphically-Scatter Plot
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Numerically
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Correlation coeffecient- statistical measure of a relationship between 2 variables
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What do experiments allow us to measure
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measure the dependent variable and the factors that interest us
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how are experiments different from all other research designs
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because it can manipulate & control factors
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What must be controlled in order for an experiment to achieve the desired purpose
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independent variable
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what are placebo effects
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expectation of benefit after taking drugs has a substantial effect, even if the drug is inert
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What kind of research designs are used to account for placebo effects
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double & single-blind procedures
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What is accomplished by random sampling
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allows each member of a population to have an equal chance of inclusion into a sample. collects people & eliminates biased
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