Question

class intervals in a grouped frequency distribution are given as 42 level, 12 to 19, 20 to 27, 28 to 35 36 243, write the next two class intervals one what is the length of each class interval to write the class boundaries of all classes 3 what are the class maths of 8th class

Answer 1

[3]
CI                         CLASS MARKS
4-11                         7.5
12-19                       15.5
20-27                        23.5
28-35                       31.5
36-43                       39.5
44-51                      47.5
52-59