Question

Half of (upper class limit + lower class limit) is —————- A. Class interval B. Class mark C. Class value D. Mean

Answer 1

Answer: Half of (upper class limit + lower class limit) is Class mark.

So, option (B)Class mark is the correct option.

Class interval: Width of class

Class interval = Upper class limit - Lower class limit

Class mark: Midpoint

Class mark = 1/2(Upper class limit + Lower class limit)

Mean: Arithmetic average of data

Mean = ∑x / N