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 BM Age SEXDum Systolic Disatolic BMI 0.5876 0.2312 0.1801 0.3735 0.36470.1088 .1669 0.1465-0.07720.0195 0.58760.2312 0.3735 0.1669 10.1801 0.3647 0.1465 10.1088 -0.0772 1 0.0195 SEXDum The correlation between Age and Systolic can be interpreted as As people get older, their systolic blood pressure tends to increase There is no linear relationship between age and systolic blood pressure As people get older, their systolic blood pressure tends to decrease ?Younger people tend to have high systolic blood pressure Previous Next G Search or type URL

Explanation / Answer

We observe that there is positive correlation between Age and Systolic blood pressure.

i.e r = 0.3735

here , r > 0, positive correlation

So both are in same direction.

Therefore

we conclude that  As people get older, their Systolic blood pressure tends to increase.

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