The age of the outlier is 18 yesrs and the number of words known is 66.
From the graph of the scatterplot given, we can visually detect the outlier . Outlier values are the values which differs from the pattern or trend of the data. They are extreme values.
From the graph, the outlier is the lone point which does not follow the linear trend or pattern of the graph.
From the graph, the age is 18 years and 66 words known.