Chapter 4.5, Problem 30E

To determine

To find: The casual relationship

Answer to Problem 30E

Possible correlation coefficient is $0.75$

There is no causal relationship

Explanation of Solution

Given:

Peoples at Beach 1, x	Peoples at Beach 2, y
$15$ $12$ $30$ $59$ $21$ $17$ $29$	$36$ $18$ $72$ $115$ $38$ $25$ $43$

Calculation:

Consider the data set consists of the numbers $x$ of people at Beach $1$ and the numbers $y$ people at Beach $2$ recorded daily for $1$ week

Now plot the graph from the data set

  

Possible coorelation coefficient is $0.75$ as it has moderate coorelation

As number of people at beach $1$ is not make any impact on the number people at beach $2$ and vice-versa so there is no casual relationship

Conclusion:

There is no casual relationship as the number of people at beach $1$ is not make any impact on the number people at beach $2$