Question

Calculate the range and coefficient of range from the following data:
The heights of $10$ children in $cm:122,144,154,101,168,118,155,133,160,140$

Answer 1

$X_{max}=168,X_{min}=101$

So, Range$=X_{max}-X_{min}=67$

Coefficient of range $=\frac{X_{max}-X_{min}}{X_{max}+X_{min}}=\frac{168-101}{168+101}=\frac{67}{269}=0.24$