find the mean of the following data set. round answer to one decimal place

Question

class Frequency

0-15 5

16-31 15

32-47 6

48-63 12

64-79 10

Answer 1

(7.5*5 + 23.5*15 + 39.5*6 + 55.5*12 + 71.5*10)/48 = 41 and 5/6