The arithmetic mean of marks in Mathematics for four divisions A, B, C and D were $$80,75,70$$ and 72 respectively. Their standard deviations were $$12,6,8$$ and 10 respectively. Then, division ______ has more uniformity.

If the standard deviation of data is 12 and mean is 72, then coefficient of variation is

140. Given that total of 16 values is 528 and sum of the squares of deviation from 33 is 9158. The variance is

Following data shows the information about marks obtained in Physics, Chemistry, Mathematics and Biology by 100 students in a class. Then subject shows the highest variability in marks