Answer:
There is a very strong positive correlation between size of a cell phone data plan and the number of text messages sent in the U.S.
Step-by-step explanation:
The correlation coefficient is a statistical degree that computes the strength of the linear relationship amid the relative movements of the two variables (i.e. dependent and independent).It ranges from -1 to +1.
Positive correlation is an association amid two variables in which both variables change in the same direction. A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.
Negative correlation is a relationship amid two variables in which one variable rises as the other falls, and vice versa.
The correlation coefficient for the relationship between the size of a cell phone data plan, x, and the number of text messages sent, y is:
r = +0.97.
The correlation value is very close to +1.
So, we can say that there is a very strong positive correlation between size of a cell phone data plan and the number of text messages sent in the U.S.
