Relative frequency and cumulative frequency charts

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A sample of cellular phone calls among college students was taken at St. Francis College. The data is summarized in the table below. Complete the Relative Frequency and Cumulative Frequency charts. Explain where the minutes are concentrated.

Manual computation

Time of Call Relative Cumulative (in minutes) Frequency Frequency

0 but less than 6 .40 .40
6 but less than 12 .30 ?
12 but less than 18 .15 .85
18 but less than 24 .08 ?
24 but less than 30 ? .98
30 or more .02 ?

Reference no: EM132858367

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