The National Health and Nutrition Examination Survey (NHANES) is a national surv

Question

The National Health and Nutrition Examination Survey (NHANES) is a national survey of health and nutrition conducted by the Centers for Disease Control. The following data is from 2007-08 and is based on 2,793 total observations (there are missing values for some variables). The following is a correlation matrix for several variables from the survey. These include: Systolic systolic blood pressure ready. Levels greater than 140 are considered high blood pressure. Disatolic - diastolic blood pressure reading. Levels greater than 90 are considered high blood pressure BMI Body Mass Index Age Age of subject in years SEXDum - a dummy variable where O Female and 1-Male Correlations Systolic Disatolic BMI SEXDum 0.3735 0.3647 0.1088 1 0.0195 0.1669 0.1465 0.0772 0.0195 0.5876 0.2312 0.1801 Systolic Disatoli BMI Age SEXDum 1 0.5876 0.2312 0.3735 0.1669 0.1801 0.3647 0.1465 0.1088 0.0772 The correlation between Age and Systolic can be interpreted as As people get older, their systolic blood pressure tends to decreasee There is no linear relationship between age and systolic blood pressure O As people get older, their systolic blood pressure tends to increase Younger people tend to have high systolic blood pressure

Explanation / Answer

Solution

The correlation between age and Systolic blood pressure is 0.3735 which is positive so,

As peopleget older, theri systolic blood pressure tends to increase

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