STA104 JUNE 2019

QUESTION 4 The data below shows the time spend of 77 people listening to traditional songs of Hajoo FM channel in a week. Listening time (hours) Number of people 1-5 5 6-10 25 11-15 30 16-20 11 21-25 4 26-30 N a) Calculate the mean and standard deviation for the above data. (5 marks) b) Draw a histogram to represent the above data. (4 marks) c) Using the histogram, estimate the modal value and comment on the value obtained. (3 marks) d) Given that the mean and standard deviation of the listening hours for Seritei FM channel were 10.176 and 6.136, respectively. Determine which radio channel has a more consistent distribution