Measurement and Statistics_Dasch_Date_021210

Measurement and Statistics_Dasch_Date_021210 - - more...

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Introduction Hypothesis - always assume the null hypothesis is true until you are 95% sure there is reason to believe it is not true (p value = .05) - alternative hypothesis: generally, the opposite of the null hypothesis i.e. there was a study done that says there is a link between internet usage and depression null hypothesis- there is no connection alternative hypothesis- there is a connection Kurtosis - “pointyness” (or lack thereof) on the graph of the frequency distribution
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Unformatted text preview: - more pointy positive - less pointy (more spread out) negative more of an even distribution Descriptive Statistics - mode: most common number - mean: average - median: middle number when all numbers in data set are put in order form least to greatest - range: highest number subtracted by lowest number...
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