Question

Find the class marks of classes 10 -25 and 35 – 55

Answer 1

Class mark = \(\frac{upper \,limit + lower \,limits}2\)

∴ class mark of 10 - 25 = \(\frac{10+25}{2}\)

= 17.5

And class mark of 35 - 55 = \(\frac{35+55}{2}\)

= 45