Pls help

Gaurav Mohnani (OWNER) (536 Points)

23 December 2012  

 For the data on frequency distribution of weights 70, 73, 49, 57, 56, 44, 56, 71, 65, 62, 60, 50, 55, 49, 63 and 45. Assume the length of class is 5, the number of class intervals would be:

(a) 6 (b) 7