# Question

The fuel capacity in gallons of 50 randomly selected cars is shown here.

Class Frequency

10–12 .......6

13–15 .......4

16–18 .......14

19–21 .......15

22–24 .......8

25–27 .......2

28–30 .......1

50

Find each of these.

a. Mean

b. Modal class

c. Variance

d. Standard deviation

Class Frequency

10–12 .......6

13–15 .......4

16–18 .......14

19–21 .......15

22–24 .......8

25–27 .......2

28–30 .......1

50

Find each of these.

a. Mean

b. Modal class

c. Variance

d. Standard deviation

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