=+other popular international products. She kept track of sales (number of containers sold per week) for six months after she made the change. The values are shown below, along with the sales numbers for the six months prior to making the change, in stem-and-leaf displays.

After Change 3 2 3 9 4 23 4 589 5 0012 5 55558 6 00123 6 67 7 0 Before Change 2 0 2 899 3 224 3 7789 4 0000223 4 5567 5 0 5 6