Mathematics
Using the information given in the adjoining histogram; calculate the mean.
Related Questions
Find mean by 'step-deviation method' :
C.I. Frequency 63 - 70 9 70 - 77 13 77 - 84 27 84 - 91 38 91 - 98 32 98 - 105 16 105 - 112 15 If the mean of the following observations is 54, find the value of p.
Class Frequency 0 - 20 7 20 - 40 p 40 - 60 10 60 - 80 9 80 - 100 13 The mean of the following distribution is 62.8 and the sum of all the frequencies is 50. Find the missing frequencies f1 and f2.
Class Frequency 0 - 20 5 20 - 40 f1 40 - 60 10 60 - 80 f2 80 - 100 7 100 - 120 8