1. The numbers of beds in a sample of 24 hospitals are listed below.

Develop stem-and-leaf display for this data.

149      167      162      157      130      180      160      167      131      145      137      194     

150      171      167      144      167      137      174      166      174      180      151      197

2. The lengths, in kilometers, of world's largest subway systems are given below. Make a pie chart.

 3. A recent survey by alumni of major university indicated that the average salary of 8000 of  its 250,000 graduates was $120,000. Does this represent the population parameter or sample statistic?