final_tutorial - Correlations (p.265...

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Correlations Standard Pattern for Correlation Arguments (p. 265) Background information:  Description of survey, including who or  what was sampled, when, where, and how. 1. Results obtained : The results can be expressed as several  simple statistical statements reporting the rate at which the  measured property was found in the two groups studied in  the sample. (EP or IP) 2. Measured correlation in sample : Typically, this states that  there is a correlation between the measured factors in the  sample population. (derived from step 1) 3. Accuracy premise : This says that the factors measured  accurately measure the target properties. In other words, if  there is a measured correlation in the sample, then there is  also a target correlation in the sample. (EP or IP, but  indirectly supported by the background information) 4. Target correlation in sample : This says that the target factors  are correlated in the sample. (2), (3) 5. Representativeness premise : This says that the sample  populations are representative of the target populations. In  other words, if there is a target correlation in the sample,  then there is a target correlation in the target population. (EP  IP) 1
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6. Final conclusion : This says that the target factors are  (positively or negatively correlated in the overall target  population. (4), (5) Put the following into standard form: Researchers were interested in finding out whether wealthy  people or less affluent people tended to carry more cash with  them when they went out shopping. To find out, they went to  a mall in a middle class suburb of Cleveland and questioned  1000 adults over the course of several days. Among other  things, they asked people about their income and about the  amount of cash they had with them. They found that of the  people with family incomes below $50,000 per year, about  35% had more than $100 in cash with them. Only about 20% 
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This note was uploaded on 12/07/2010 for the course PHIL PHIL 001 taught by Professor during the Spring '10 term at Simon Fraser.

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final_tutorial - Correlations (p.265...

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