The frequency table below shows the selling price per unit (RM) of an item sold at 30 shops selected randomly. No. of Selling Price (RM) 8-9 9-10 10-11 11-12 12-13 No. of Shops 3 7 10 8 2 (a) Compute the mean selling price. (b) Fifty percent of the shops sold the item at less than RM x per unit. Determine the value of x. (c) Find the quartile deviation and coefficient of variation. (d) Is the distribution of the selling price symmetrical?

2. The frequency table below shows the selling price per unit (RM) of an item sold at 30 shops selected randomly. No. of Selling 8-9 9-10 10-11 11-12 12-13 Price (RM) No. of Shops 3 7 10 2 (a) Compute the mean selling price. (b) Fifty percent of the shops sold the item at less than RM x per unit. Determine the value of X. (c) Find the quartile deviation and coefficient of variation. (d) Is the distribution of the selling price symmetrical