Question

if class mark is 10 and classs width is 6 then find the class​

Answer 1

Class = 7-13

Explaination:

Upper limit= Class mark +1/2 of class width

=10+1/2 of 6

=10+3

=13

Lower limit=Upper limit - class width

=13-6

=7

Answer 2

Class width = 6.

Class Mark = 10

The the require uppr class be x and lower class be y

Since, class width is 6

y - x = 6 ------------eq1

Also upper class + lower class = class marks

x + y = 20 eq2 ( upper class 10

(lower class 10)

Add eq 1 and 2 we get

2y = 26

y = 26÷2

y = 13

Substituiting x + 13 = 20

x = 20-13

x = 13

So it appears to be 7-13 it comes out.

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