In recent years, some evidence suggests that high indoor radon concentration may be linked to the development of childhood cancers, but many health professionals remain unconvinced. The article “Indoor Radon and Childhood Cancer” (Lancet, 1991: 1537–1538) presented the accompanying data on radon concentration (Bq/m3) in two different samples of houses. The first sample consisted of houses in which a child diagnosed with cancer had been residing. Houses in the second sample had no recorded cases of childhood cancer. The data is represented by a stem-and-leaf display in figure 1. Stem and Leaf Display Draw a boxplot for both the samples on the same graph Indicate both kinds of outliers in both the samples. Determine the IQR for both the samples.

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