Question

Creating a Scatterplot
The coordinate points below show part of the data collected by the cell phone company, where x is age in years and y is texting speed in words per minute.

(12, 16), (13, 18), (13, 10), (14, 16), (15, 9), (15, 8), (16, 17), (17, 23)

If this data was plotted on a scatterplot, would there be a relationship between the variables? If yes, explain the relationship.
Yes, there is a relationship. As age increases, texting speed also increases.
Yes, there is a relationship. As age increases, texting speed decreases.
Yes, there is a relationship. As texting speed decreases, age also decreases.
No, there is no clear relationship between age and texting speed.

Answer 1

Yes. There is a weak positive relationship: on average texting speed tends to increase as age increases (older ages have higher speeds overall, though there is variability). The sample correlation is about r ≈ 0.26, so the positive association is small.