5 A study was done on the growth rate of cultured prawns in a farm. The data in Table 4 indicates the mass of 30 prawns after three months in the pond. Table 4: Growth rate of cultured prawns 25 55 46 50 38 30 20 30 59 75 28 65 66 43 57 25 33 57 23 22 45 20 25 25 35 22 40 70 28 61 a) Construct a frequency distribution for the data, using 20-29 as the first class. (6 Marks) b) Compute the mean. (2 Marks) c) Identify the mode. (1 Mark)