Question

Write the width or size of the class interval 30-40

Answer 1

$Given \: class \: interval \: 30 - 40$

$lower \: boundary \: of \: the class = 30$

$Upper \: boundary \: of \:the \: class = 40$

$\red{Class \: size }= \green{Difference \: between \:upper }$

$\green {and \: lower \: boundaries \: of \: a \: class }$

$= 40 - 30$

$= 10$

Therefore.,

$\red{ Class \: size \: of \: the \: class \: interval}$

$\green { = 10 }$

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