# Question

Thirty automobiles were tested for fuel efficiency (in miles per gallon). This frequency distribution was obtained. (The data in this exercise will be used in Exercise 20 in Section 3–2.)

Class boundaries Frequency

7.5–12.5 .......3

12.5–17.5......5

17.5–22.5......15

22.5–27.5......5

27.5–32.5......2

Find the :

Mean

Modal class

Class boundaries Frequency

7.5–12.5 .......3

12.5–17.5......5

17.5–22.5......15

22.5–27.5......5

27.5–32.5......2

Find the :

Mean

Modal class

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