Which of the following data sets has the smallest range?

Question

{50,30,10,0,80,100}
{324,318,367,312,389,337}
{37,19,40,54,75,68}
{148,145,117,148,199,172}.

Answer 1

{37, 19, 40, 54, 75, 68} has the smallest range with a range of 56.