# Question

A random sample of 30 states shows the number of low-power FM radio stations for each state.

Class limits Frequency

1â€“9 .........5

10â€“18 ..............7

19â€“27 ........10

28â€“36 ........3

37â€“45 ........3

46â€“54 ........2

Find the variance and standard deviation.

Class limits Frequency

1â€“9 .........5

10â€“18 ..............7

19â€“27 ........10

28â€“36 ........3

37â€“45 ........3

46â€“54 ........2

Find the variance and standard deviation.

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