RM Lecture 2 - Significance Testing

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10 Terms

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target population

group we’re trying to understand, we take a sample from population of interest

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sampling error

when the mean of our sample is different from the mean of the population

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multiple samples

taking an average across multiple samples lowers the sampling error, important for replication of studies

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the sampling distribution of the mean is a…

normal distribution

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true positive

accepts the experimental hypothesis, and is true

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true negative

accepts the null hypothesis, and is true

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type 1 error/false positive

accepts the experimental hypothesis, and is false

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type 2 error/false negative

accepts the null hypothesis, and is false

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inferential statistics

the probability that you would find your results if the null hypothesis is true /probability a type error will occur, result is due to chance

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p value

probability of getting your results by chance, alpha level, p<0.05