From the data given below, find median.

Daily Income	No of families
Less than 100	5
100-200	9
200-300	12
300-400	2
400 and above	2

6

(a)

Find the Lower and Upper Quartile in the set of numbers given below:
62, 68, 53, 57, 20, 30, 32, 45, 72, 77, 81

6

(a)

From the data given below, find Q₁ and Q₃.

Wages	No. of workers
More than 10	50
More than 20	35
More than 30	25
More than 40	20
More than 50	18
More than 60	10

6

(a)

From the data given below, find Q₁ and Q₃.

Pocket Expenses	Frequency
0-10	2
10-30	9
30-100	3
100-500	5
500-1000	4
1000-2000	2

6

(a)

It is known that median of a series is 41 and total frequencies are 82. Find the missing frequency and seventh decile and 90^th percentile.

Class Interval	Frequency
10-20	10
20-30	F1
30-40	15
40-50	20
50-60	F2
60-70	11

6

(a)

Define Median. Discuss its merits and demerits.

6

(a)

Define Mode. Discuss its merits and demerits.

6

(a)

Compare mean, median and mode as measures of central tendency. Discuss the situations when one is more suitable than other.

6

(a)

State relation between mean, median and mode in normal and skewed distribution with an example.

6

(a)

What are quartiles? How are quartiles, deciles and percentiles different from each other?

6

(a)