The following less than cumulative frequency distribution shows the waiting time for all 100 customers to carry out their transactions in a bank on a particular day Time (minutes) 10 Number of customers 8 15 18 20 38 25 64 30 96 40 100 a) Draw a less than cumulative frequency polygon Use the graph to estimate median and interpret the result (ii) the quartile deviation (iii) the proportion of the customers whose waiting times are not more than 18 minut (i) the b) Calculate the mean and the standard deviation of the above data c) Calculate the Pearson's coefficient of skewness d) Suggest a measure of central tendency and a measure of variability that is suitable to represent the set of data Justify your answers

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The following less than cumulative frequency distribution shows the waiting time for all 100 customers to carry out their transactions in a bank on

The following "less than" cumulative frequency distribution shows the waiting time for all 100 customers to carry out their transactions in a bank on a particular day. Time (minutes)

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