The age (in years) of people participating in a dance competition are $12,14,20,16,18,14,12,22$ and $25$. Find the median of the data.

Q. The minimum age of children to be eligible to participate in a painting competition is 8 years. It is observed that the age of youngest boy was 8 years and the ages of rest of participants are having a common difference of 4 months. If the sum ages of all the participants is 168 years. Find the age of eldest participant in the painting competition.

Q. Age of participants in two different competitions is given. Find mode of data 1 and median of data 2 by observation (without calculation).

Q. The age of students participating in a darts competition is given in the list below.

What is the value of a if the mean age is $13.6$? Also, find the median.

Q. The ages of children in a scout camp are $13,13,14,15,13,15,14,15,13,15$ years. Find the mean, median and mode of the data.

Q. In a dance competition, the marks given by two judges to $10$ participants are given below.

Participant	A	B	C	D	E	F	G	H	I	J
1st Judge	1	5	4	8	9	6	10	7	3	2
2nd Judge	4	8	7	6	5	9	10	3	2	1

Find the rank correlation coefficient.