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Unformatted text preview: The actual reduction in heart attack occurrence went from 8.2% to 6.7% Is this meaningful? o IN people without cardiovascular disease aspirin reduces the chance of heart attack by one tenth Down from .57% to .51% • This effect may be significant but the descriptive statistics gives a richer understanding of the meaningfulness. The Balance of Inferential and Descriptive Stats • There is a need to consider both in order to determine how meaningful things really are “The Effects of Positive Affect (from receiving candy)” Article You will use both in your scientific reports • Descriptive- Describe your data- usually central tendencies • Inferential- Used to infer findings from your sample to the population o Whether or not your findings are reliable • Next class- go into more details about descriptive statistics o Finish reading chapter 2 move on to chapter 3 if you want to get ahead...
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- Spring '11
- Statistics, Mean