Refer to Exercise 2.68.
a. Round each observation to the nearest 10 ml, drop the terminal 0s, and then obtain a stem-and-leaf diagram of the resulting data.
b. Truncate each observation by dropping the units digit, and then construct a stem-and-leaf diagram of the truncated data.
c. Compare the stem-and-leaf diagrams that you obtained in parts (a) and (b) with each other and with the one obtained in Exercise 2.68.