Question: A modified boxplot can be drawn by placing a box around Q1 and Q3 and then extending the whiskers to the largest and/or smallest values

A modified boxplot can be drawn by placing a box around Q1 and Q3 and then extending the whiskers to the largest and/or smallest values within 1.5 times the interquartile range (that is, Q3 €“ Q1). Mild outliers are values between 1.5(IQR) and 3(IQR). Extreme outliers are data values beyond 3(IQR).

For the data shown here, draw a modified boxplot and identify any mild or extreme outliers. The data represent the number of unhealthful smog days for a specific year for the highest 10 locations.

Extreme outliers Extreme outliers Mild outliers Mild outliers 1.5(IQR) IQR1.5 IQR) 97 39 43 66 91 43 54 42 53 39

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