Question

Find the mode of data and the missing frequency when sum of the frequency is 181

Age (in ye)ar 5-7 7-9 9-11 11-13 13-15 15-17 17-19

Number of

students

X 15 18 30 50 48 x
​

Answer 1

Answer:

is given that the sum of frequencies is 181. Here, the maximum class frequency is 50, and the class corresponding to this frequency is 13 – 15. So, the modal class is 13 – 15. Hence, the mode is 14.82.