6. Construct a stem-and-leaf display using intervals of 10 scores (e.g., 10-19, 20-29, and so on) for the following 30 scores:

50, 42, 64, 18, 41, 30, 48, 68, 21, 48,

43, 27, 51, 42, 62, 53, 45, 31, 13, 58,

60, 35, 28, 46, 36, 56, 39, 46, 25, 49