The graph above shows a positive relationship where an increase in one variable leads to an increase in the other. The plot shows that if a straight line is drawn across the plots, then one would obtain a positive gradient. One good example of such a plot in health care is the relationship between hygiene and health. It has been established that personal hygiene has a very big influence on their health. Those who have very little regard for hygiene are often exposed to many diseases because they attract bacteria and other health hazards ( Cronin, Coughlan & Smith, 2015 ). The positive correlation here can be analyzed by noting that the higher the unhygienic levels, the higher the rate of contracting different diseases.
This scatter plot above represents a negative correlation where an increase in one variable leads to a decrease in the other. In health, this can be well explained by looking at how running influences cardiovascular problems. A researcher conducted by Cronin, Coughlan & Smith, 2015) established that running for only a few minutes a day regardless of the speed can have a very significant impact on an individual’s health. Results showed that those who engage in these exercises are at low risk of getting cardiovascular diseases as opposed to people who do not run at all. The implication of this statement is that the more one runs, the less likely they are of dying from such complications. From the scatter plot, it can be seen that as one variable increases the other starts to decrease and the negative gradient can be used to prove this point. From the example provided, the risk of dying from heart diseases is therefore reduced for individuals who engage in running exercises.
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References
Cronin, P., Coughlan, M., & Smith, V. (2015). Understanding nursing and healthcare research . Los Angeles: SAGE
