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Mcqs MBBS Exams India
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Preventive & Social Medicine Mcq Of The Day

Question: A cardiologist found a highly significant correlation coefficient (r=0.90, p=0.01) between the systolic blood pressure values and serum cholesterol values of the patients attending his clinic. Which of the following statements is a wrong interpretation of the correlation coefficient observed ?
A) Since there is a high correlation, the magnitudes of both the measurements are likely to be close to each other
B) A patient with a high level of systolic BP is also likely to have a high level of serum cholesterol
C) A patient with a low level of systolic BP is also likely to have a low level of serum cholesterol
D) About 80% of the variation in systolic blood pressure among his patients can be explained by their serum cholesterol values and vice a versa

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