Problem solving and data analysis
Scatterplots — Basic example
- [Presenter] We're told the figure above shows the percent of US adults who are smokers from 1980 to 2000. A line of best fit is also shown. Based on the line of best fit, which of the following is closest to the predicted percent of US adults who are smokers in 1981. And here are our choices, so pause this video and have a go at this on your own before we work through it together. Alright, we're trying to find the closest to predicted percent of US adults who are smokers in 1981. So let's see, we're talking about years since 1980 so 1981 would be one year since 1980, so that would be right over there. And let's see what this predicts. Let's draw a vertical line and it looks pretty close to this hash mark right over here, which is at 31-32%. And so when I look at the choices, I see choice D right over there, 32%.