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lorasvet [3.4K]
3 years ago
10

Using the grouped frequency distribution, what is the arithmetic mean miles per gallon?

Mathematics
1 answer:
lianna [129]3 years ago
3 0

Answer:

Arithmetic mean is 18.6 mpg

Step-by-step explanation:

As complete statement is not given so considering most relevant question attached below

From given frequency distribution:

mpg      No. of trucks (fₓ)       X (mid point)           X.fₓ    

10-13              2                      11.5                            23

13-16              5                      14.5                           72.5

16-19             10                     17.5                            175

19-22             8                      20.5                          164

22-25            3                      23.5                          70.5

25-28            2                      26.5                          53

∑(fₓ)  = 30

∑X.fₓ = 558

Arithmetic mean=\frac{\sum X.f_{x} }{\sum f_{x}}\\\\=\frac{558}{30}\\=18.6 mpg

                           

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