Calculation of Mean, Median and Mode from grouped date: Number of complaints per week received by Radio Crazyr in a 12 week rating period: NoofMldpolntlmJNoofweeksfmCumulatweFrc-quency complaints 'I E a = . (f) . . .......ia:.ia.................................................................................. .................mug"......................:....................................................:..........................................u.............................u...u.: ....\"naliza..................................................u.............................. g ....................1........................'....................................................'.................................................................................- Required: a) Calculate the mean b) Calculate the median class c) Calculate the modal class d) What remedial actions the management can take from the above ndings