Points: 2 Some details from a frequency distribution of time taken in seconds to produce a product K are given below: Time taken (mid-point) x f fx fx 7.5 4 30 225.00 12.5 10 10 125 1,562.50 17.5 8 140 2,450.00 22.5 16 360 8,100.00 27.5 20 550 15,125.00 32.5 10 325 10,562.50 37.5 8 300 11,250.00 42.5 4 170 7,225.00 What is the mean of this frequency distribution? esc G Search or type URL