Question

If the class mark of a class interval is 8.5. the class size is 5. find the class limit of the corresponding class interval

Answer 1

let x be the upper limit and y be the lower limit of class .

Answer 2

Answer:

Class interval : 6 - 11

Step-by-step explanation:

Given : If the class mark of a class interval is 8.5. The class size is 5.

To find : The class limit of the corresponding class interval?

Solution :

Let the class mark, x=8.5

Class size, h=5

Lower limit is

$L=x -\frac{h}{2}$

$L=8.5-\frac{5}{2}$

$L=8.5-2.5$

$L=6$

Upper limit is

$U=x+\frac{h}{2}$

$U=8.5+\frac{5}{2}$

$U=8.5+2.5$

$U=11$

Therefore, Class interval : 6 - 11