:


 	
 number of guinea pigs              percentage 
  	
 owned by family 


 	
      0                                30% 

 	
      1                                20% 

 	
      2                                20% 

 	
      3 - 5                            30% 


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

 	
 a.  10 
 	
 b.   7 
 	
 c.  20 
 	
 d.   4 
 	
 e.   5 








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