Consider the stem-and-leaf display shown here.
Stem Leaf
5 ...................... 1
4 ...................... 457
3 ...................... 00036
2 ...................... 1134599
1 ...................... 2248
0 ...................... 012
a. How many observations were in the original data set?
b. In the bottom row of the stem-and-leaf display, identify the stem, the leaves, and the numbers in the original data set represented by this stem and its leaves.
c. Re-create all the numbers in the data set and construct a dot plot.