Choose the correct alternative among the following :
the class width of the class interval 133-139 is,

Choose the correct alternative among the following : The class mark of the class interval 120-130 is,

The width of the class interval 20- 30 is

The width of the class interval 40-50 is

The class width of the class interval 133-139 is...a) 3 b) 5 c) 6 d) 4

Class width of any class interval is ,

The class size of the class interval 60 - 68 is 8.

Class width of a class interval is defined as

Define: class-interval

Choose the correct alternative for each of the following questions : What is the class mark of the class 10-100?