1. For the values 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 there are no outliers. If you increase 10 to 20, then 20 would be declared an outlier by a boxplot. If the value 9 is also increased to 20, would the boxplot find two outliers? If the value 8 is also increased to 20, would the boxplot find all three outliers?
2. Use the results of the last problem to come up with a general rule about how many outliers a boxplot can detect.