A home appliance center advertised the following refrigerato

A home appliance center advertised the following refrigerators, of which it had, respectively, 18, 12, 9, 14, and 25 in stock. Brand Size Price Company A 15 cu. ft. $416 Company B 21 cu. ft. $549 Company C 19 cu. ft. $649 Company D 21 cu. ft. $716 Company E 24 cu. ft. $799 (a) What is the average size of these refrigerators? (b) What is the average price of these refrigerators?

Solution

a)

Consider:

Thus,  
  
Mean = Sum(xf) / Sum(f) =    20.34615385 [ANSWER]

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b)

Consider:

Thus,      
      
Mean = Sum(xf) / Sum(f) =    639.9487179   [ANSWER]