: <p>

number of guinea pigs              percentage 
  	
 owned by family  <p>

0                                30%  <p>

1                                20%  <p>

2                                20%  <p>

3 - 5                            30%  <p>

Suppose we make a percentage histogram of the data given in the
table.  Then the height of the rectangle over the class interval
3-5 is closest to <p>

a.  10 
 	
 b.   7 
 	
 c.  20 
 	
 d.   4 
 	
 e.   5  <p>

t 	
  <p>