Question

find the class mark of 50-60​

Answer 1

Answer:

Classmark=2Lowerlimit+Upperlimit​ ⇒ Given class interval is 50−60 ⇒ Lower limit =50 and upper limit =60 ∴ Classmark=250+60​ =2110 ...

Classmark=2Lowerlimit+Upperlimit​ ⇒ Given class interval is 50−60 ⇒ Lower limit =50 and upper limit =60 ∴ Classmark=250+60​ =2110 ...Step-by-step explanation:

Answer 2

Answer:

Class mark = upper limit + lower limit / 2

= 60 + 50 /2

= 110 / 2

= 55.