Measures of Dis...

The mean of $$10$$ observations is $$48.4$$. If by mistake one observation was taken as $$54$$ instead of $$45$$.
The correct mean is ________.

Average of $$12$$ members = $$11.0$$. Average of the first six members = $$10.5$$, average of the last six members = ______.

The average runs of a cricketer in four innings is $$32$$. How many runs he should score in the fifth inning so that his averages score becomes $$50$$ runs?

The mean of $$4,3,9,x,6 is 5.4$$ then x is __________.

If Z - M = $$4$$ and Z + M = $$60$$, then Z is _______.

If Z - M = $$4$$ and Z + M = $$60$$, then M is _____.

The average runs of two groups is $$57$$. The mean of the first group is $$52$$ and the mean of the second group is $$60$$. The proportion of ______.

To find the median, it is necessary to arrange the data in _______.

The first quartile is also known as ______.

The third quartile is also called ________.