Shoe and Apparel E-Tailers. In the special report “Mousetrap: The Most-Visited Shoe and Apparel E-tailers” (Footwear News, Vol. 58, No. 3, p. 18), we found the following data on the average time, in minutes, spent per user per month from January to June of one year for a sample of 15 shoe and apparel retail websites. 13.3 9.0 11.1 9.1 8.4 15.6 8.1 8.3 13.0 17.1 16.3 13.5 8.0 15.1 5.8 The following Minitab output shows a stem-and-leaf diagram for these data. The second column gives the stems, and the third column gives the leaves.

Did Minitab use rounding or truncation to obtain this stem-andleaf diagram? Explain your answer.