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.
| LOCATION |
LENGTH |
| Moscow |
340 |
| Paris |
192 |
| London |
515 |
| Tokyo |
281 |
| NYC |
371 |
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?