Question

Class mark, upper limit and lower limit of a class can be connected by using:

• A. Upper limit + lower limit
• B.
• C.
• D. upper limit - lower limit

Answer 1

Answer: (B), (D)

The correct options are
B

D

upper limit - lower limit

Class mark is the midpoint of a class interval.

Therefore, its formula is given by Class mark = $\frac{\text{Upper limit + Lower limit}}{2}$.

It can also be written as Upper limit = 2 Class Mark - Lower limit.