Phil12_w10_finalexam_sample

# Phil12_w10_finalexam_sample - Phil 12 Winter 2009...

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Phil 12: Logic and Decision Making (Winter 2010) Directions and Sample Questions for Final Exam Part I: Correlation A. Answer the following multiple-choice questions 1. To make a prediction from a new value of the predictor variable based on a correlation between two score values, you a. multiply the Pearson correlation coefficient by the new predictor value and add the value of the y-intercept b. multiply the new predictor value by the slope of the regression line and add the value of the y-intercept. c. divide the new predictor value by the slope of the correlation line and add the value of the y-intercept. d. add the new predictor value to the slope of the correlation line and divide by the value of the y-intercept. 2. For SAT scores to be a legitimate factor in determining college admissions a. colleges must align their curriculum with the questions used on the SAT b. SAT scores must be a direct (proximal) cause of success in college c. SAT scores must be a cause (direct or indirect) of success in college d. there must be a correlation between SAT scores and success in college 3. The diagram to the right is an example of a a. histogram illustrating a lack of correlation between tobacco and alcohol b. scatterplot illustrating a perfect correlation between tobacco and alcohol c. scatterplot illustrating a positive correlation between tobacco and alcohol d. histogram illustrating a positive correlation between tobacco and alcohol 4. Which of the following choices best explains the concept of an “operational definition”? a. It supplies sufficient conditions for a variable b. It provides necessary conditions for a variable c. It provides necessary and sufficient conditions for a variable d. It relates variables used in a hypothesis to measurable variables 5. Using the number of items a person can recall as a measure of memory has high construct validity if it a. does not involve an operational definition of memory b. is only employed in a limited range of settings c. reliably assigns the same scores to the same individuals on different occasions d. actually measures memory

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6. You have found a correlation of 0.42 between two variables in a sample of people. Why do you need to determine whether the correlation is statistically significant? a. there could be a correlation in the sample but none in the actual population b. there could be a correlation in the actual population but none in the sample c. although there is a correlation, it might not be very important d. there may be very different reasons for the correlation in the actual population than in the sample 7. Which of the following makes no sense? a. p < 0.10 b. r = 0.5 c. p = -0.05 d. r = -0.95 8. Suppose that a study claimed p<0.001. The probability of rejecting the null hypothesis when it is in fact true a. cannot be determined from the information given b. depends upon whether there was a proper control group c. greater than 0.999 d. less than 0.001 9. In doing a test of statistical significance, you will have made a Type I error if you conclude that a.
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• Spring '08
• Brown
• Causality, Correlation and dependence, Pearson product-moment correlation coefficient, Covariance and correlation, Spearman's rank correlation coefficient

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Phil12_w10_finalexam_sample - Phil 12 Winter 2009...

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