Practice 1 The following is a sample of salaries of school teachers in a Ohio county 31,000; 32,000; 34,000; 37,000; 40,000; 42,000; 44,000; 47,000; 56,000; 56,000; 59,000; 62,000. Solve the following. a) Which is the last significant digits? Hint: the right-most digit that is not all zero in every value is consi as the last significant digits. b) Create a stem-plot for the data