Question

If mean of the following data are given as 28.5. find the missing frequency. class interval- 0-10, 10-20, 20-30, 30-40, 40-50 frequency- 7, x, 15, 8, 10​

Answer 1

Answer:

102.5

Step-by-step explanation:

(7+x+15+8+10)/5=28.5

40+x=28.5*5

40+x=142.5

x=102.5