The National Company responsible for the company where he work has newly published a document stating as that the levered beta of the sector of energy transportation is as 0.471870073 (it is 9 decimals). They acquired this number by considering the betas into the sector, ranging among -0.24 and 1.16. What is the point of being therefore precise with the betas? Does this make any sense to apply identical beta to all the companies in a sector?