To construct a boxplot follow these five steps 1 Draw a central box from the first quartile to the third quartile 2 Draw a vertical line segment in the box to mark the median 3 Use the 1 5IQR rule to identify possible outliers 4 Draw lines called whiskers that extend from the box out to the smallest and largest observations that are not outliers 5 If there are any outliers mark them separately 3 1 0 220 165 238 193 174 151 1 2 Example 2 Here again are the data showing the number of home runs hit by each Major League Baseball team in 2017 2 Identify if there are any outliers 186 219 212 192 224 206 224 189 200 128 196 228 237 222 232 168 223 186 221 194 241 1 Determine the five number summary for these data 3 3 Construct a boxplot to summarize this distribution 187 234 215