1. A local health official notices that as the number of people on the beach decreases, the number of new cases of COVID-19 also decreases. This would be an example of what type of relationship? O A positive relationship. A negative relationship. O A strong relationship.
Given Information:
A local health official notices that as the number of people on the beach decreases, the number of new cases of COVID-19 also decreases.
This would be an example of a positive relationship.
Suppose X denote the number of people on the beach and Y denote the number of new cases of COVID-19.
Relationship between two variables X and Y is said to be positive, if both the variables move in same direction. A positive relationship exists when one variable decreases as the other variable decreases or when one variable increases as the other variable increases.
Negative relationship exists when the variables move in opposite directions. That is, if X increases, Y decrease or if X decrease, Y increases.
The relationship between two variables is said to be strong when their correlation coefficient value is larger than 0.7. Correlation coefficient r is a measure which indicates the strength of association between two variables.
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