It has been reported that there has been a change in the type of practice physicians are ­selecting for their career. In particular, there is concern that there will be a shortage of family practice physicians in future years. The following table contains data on the total number of office-based physicians and the number of those physicians declaring themselves to be family practice physicians. The numbers in the table are given in thousands of physicians.

a. Use a bar chart to display the increase in the number of family practice physicians from 1990 to 2001.
b. Calculate the percentage of office-based physicians who are family practice physicians and then display these data in a bar chart.
c. Is there a major difference in the trend displayed by the two bar charts?

Year Family Practioe Total Office-Based Physicians 1980 190 995 1998 1999 2000 2001 47.8 57.6 59.9 64.6 662 65 700 2713 359.9 427.3 468.8 473.2 490.4 514.0