Notes
Notes - notes.io |
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- descriptive statistics
- sampling distributions
- confidence intervals
- correlation
- simple linear regression
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descriptive statistics
- univariate (one variable)
- measures of centrality
- mean of average
- median (average, # in the middle)
- mode (most frequently observed)
data distributions
- histograms
measures of variability
- variance
- as n increases, sample variance decreases
- standard deviation
- positive square root of variance
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sampling distributions
- each sample is different based on random chance
- each sample will have its own set of descriptive statistics
- normal distribution if n is large
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