The following frequency distribution shows the daily sales (in thousands RM) of sample of 50 retail stores. Daily sales (RM000) Frequency 10 to but less than 20 4 20 to but less than 30 10 30 to but...

Solve question (iii)only

Extracted text: The following frequency distribution shows the daily sales (in thousands RM) of sample of 50 retail stores. Daily sales (RM000) Frequency 10 to but less than 20 4 20 to but less than 30 10 30 to but less than 40 17 40 to but less than 50 9. 50 to but less than 60 10 (i) Calculate the mean and the standard deviation. (ii) Compute the median and interpret the value. (iii) Find the coefficient of skewness and comment on the shape of the distribution.