The data below show the number of major road and highway improvement projects completed in the 20 western states during the past year.
a. Create a stem-and-leaf diagram to display the data using two leading digits to form the stem. Use a “leaf unit” of 10 so that you can construct the diagram using only one-digit leaves. Retain the original order when entering the leaf values.
b. Produce an ordered stem-and-leaf diagram by putting the leaf values in ascending order.