Question

solve this fast ...................

Answer 1

As we know that,

Range = maximum value - minimum value 
_____________________________________

Here,

Arranging in order,

9.1,6.8,5.3,1.9


Range = first observation - last observation 

Range = 9.1 - 1.9

Range = 7.2


Now,


7.2 is the range 


Your second option is correct


i hope this will help you


-by ABHAY