Exploring Scatterplots and Predictions

What does the figure above show?

• The percent of U.S. adults who are non-smokers from 1980 to 2000.

• The percent of U.S. children who are smokers from 1980 to 2000.

• The percent of U.S. adults who are smokers from 1980 to 2000.

• The percent of U.S. adults who are smokers from 1990 to 2010.

What additional information is provided in the figure?

• A table listing the number of smokers each year.

• A pie chart showing the distribution of smokers by age.

• A bar graph showing the number of smokers each year.

• A line of best fit.

What is the task based on the line of best fit?

• To find the closest predicted percent of U.S. adults who are smokers in 1981.

• To find the percent of non-smokers in 1981.

• To find the exact percent of smokers in 1981.

• To find the percent of smokers in 2000.

How many years since 1980 is 1981?

• Three years.

• Four years.

• Two years.

• One year.

Where would 1981 be located on the graph?

• One year since 1980.

• At the end of the graph.

• Two years since 1980.

• At the beginning of the graph.

What is the closest predicted percent of U.S. adults who are smokers in 1981?

• 30%

• 31%

• 32%

• 33%