Question

In the class interval (5 – 10), find (i) class mark (ii) class size

Answer 1

$\huge \boxed { \underline{ \bold{ \purple{A} \red{n} \blue{s} \green{w} \orange{e} \pink{r}}}}$

i) Class mark : upper limit + lower limit / 2

= 10 + 5/2

= 7.5

ii) Class size : Upper limit – Lower limit

= 10 – 5

= 5

.°. Class mark = 7.5 and

Class size = 5

Answer 2

${\underline{\boxed{\bf{\purple{★Solution:-}}}}}$

I) class mark : upper limit + lower limit /2

= 10 + 5/2

= 7.5

II) class size : upper limit - lower limit

= 10 - 5

= 5

Therefore,

Class mark = 7.5

Class size = 5