Survey One

1. The TOEFL scores for OIHS are given by the following data set:
   
   338, 343, 367, 370, 373, 383, 387, 390, 400, 403, 407, 420, 427, 440, 440, 443, 443, 443, 443, 450, 487, 490, 517
   
   1. Calculate the frequency using the classes (intervals) in the table below.  Include the class upper limit (CUL) in each class.
      

      Class Lower Limit	Class Upper Limit	Frequency	Relative Frequency
      338	374	_______________	_______________
      375	410	_______________	_______________
      411	445	_______________	_______________
      446	481	_______________	_______________
      482	517	_______________	_______________
      	Sum:	_______________	_______________

   2. Calculate the relative frequency for each interval (class) in the table above.
      
      
   3. Sketch a relative frequency histogram of the data, labeling your horizontal axis as appropriate.
      

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