Q1)  The numbers of beds in sample of 24 hospitals are given below.

Create a 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

Q2) Lengths, in kilometers, of world's largest subway systems are listed below.  Create  a pie chart.

Q3) A recent survey by alumni of a major university indicated that average salary of 8000 of  its 250,000 graduates was $120,000.  Does this signify population parameter or sample statistic?