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A random sample shows the number of low-power FM radio stations for each state. Class Frequency 1-9 5 10-18 9 19-27 10 28-36 3 Calculate

A random sample shows the number of low-power FM radio stations for each state. Class Frequency 1-9 5 10-18 9 19-27 10 28-36 3 Calculate the variance. Express your answer rounded to two decimal places. 74.79

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