Suppose the relationship between skin cancer mortality (number of deaths per 10 million people) and the state latitude of the center at each of 49 states in the U.S. (degrees North) is described using the plot below. Which correlation coefficient best describes the given graph? Skin cancer mortality versus state latitude 30 35 40 45 State Latitude A student found studies indicating that eating breakfast is strongly positively correlated with scores on exams. The student concluded that in order to score high on the exam, he should eat his breakfast on the day of the exam. What concept in correlation did the student get confused on? Correlation and Causation; Eating breakfast would not cause high scores on the exam. Direction of correlation; eating breakfast is associated with low exam scores. Nothing; the conclusion is valid. Strength of correlation; strong association means eating breakfast is not really associated with exam scores. Unit changes; the correlation may not be the same if the exam score is measured in percentages rather than raw score. Skin Cancer mortality 100 120 140 160 180 200 220

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