Question

Activity Two: Cumulative Frequency The following data shows a study involving 200 people who were asked to provide information about how much they spend on their phone bill each month. Cumulat Cumulative Cumulative Relative Percentage Frequency Phone Bill $0 to s$15 $15 to $$30 $30 to s$4S >$45 to s$60 >$60 to s$75 >$75 to s$90 >$90 to s$105 >$105to s$120 Frequency 26 40 34 Frequency 26 Frequency 0.130 0.330 0.500 0.640 0.705 0.845 0.930 1.000 13.0 33.0 50.0 64.0 70.5 100 128 141 169 13 28 17 14 200 84.5 93.0 100.0 200 otal Examine the previous table and answer the following questions: (a) What type of data do you require to be able to formulate the cumulative frequency? Is it nominal, interval, ordinal, ratio? At a minimum, what do you require? (b) What is the number of people in the sample who have a phone bill of $90 or less? (c) What is the proportion of customers who have a phone bill of $90 or less? (d) What is the proportion of customers who have a phone bill of more than $75? (e) If you were to plot the dollar phone bill by the cumulative frequency, what would the graph be known as?

Answer 1

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