Answer:
i think its the 2nd one
Step-by-step explanation:
Answer:
Step-by-step explanation:
143º I’m not sure
The answer is <u>143 miles.</u>
<h3>
EXPLANATION</h3>
The ratio between Dory's miles and Karly's miles is 11:1. This means that we need to <em>divide 156 by 12, </em>which is <u>13.</u>
Because Dory's miles make up 11/12 of the total miles, we need to take 1/12 (which is 13) from the 156 to get the final answer of <u>143 miles.</u>
From the observation of the dispersion graph it is concluded that the answer to this question is option D. r = -0.5.
The correlation coefficient "r" is a measure of the linear relationship between two random variables.
When the correlation is positive, the value of "r" is between 0 and 1. This means that when one variable increases the other too.
When the correlation is negative, the value of "r" is between -1 and 0. This means that one variable decreases as the other increases.
When there is no correlation the value of "r" is 0
In this case, the dispersion chart shows that the variable "y" decreases as the variable "x" increases. Therefore the value of "r" must be negative. Of all the options, the only one that presents a value of negative r is option D:
r = -0.5