Question

fill in the blanks. the class mask of a class interval x-y is......​

Answer 1

Answer:

Class mark of an interval is defined as

Let us assume that the x -y be interval . As given in the question . The interval is 45-52 . Therefore the class mark of the class interval 45-52 is 48.5 .

Answer 2

Answer: the class mark of any interval would be = upper limit+lower limit/2

Hence, class mark of interval x-y= x+y/2