From the wholesale price indices of six years given below, find median of the wholesale price indices.

Year	WPI
2005	120
2006	130
2007	140
2008	145
2009	150
2010	155

3

(a)

Find median from the data given below:

Wages (per hour):	20	25	30	35	40	45	50
Number of Workers:	5	7	6	10	5	4	4

3

(a)

From the following data of the marks obtained by 60 students of a class,find median.

Marks	20	30	40	50	60	70
No of students	8	12	20	10	6	4

3

(a)

Calculate median from the following data set.

Marks in Economics	0-10	10-20	20-30	30-40	40-50	50-60	60-70	70-80
No. of students	5	15	18	12	20	15	7	3

3

(a)

From the data given below, find median.

Marks obtained	No. of students
Less than 10	3
Less than 20	5
Less than 30	10
Less than 40	18
Less than 50	25
Less than 60	30

Marks obtained (class interval)	No of students	Cumulative Frequency
0-10	3=3-0	3
10-20	2=5-3	5
20-30	5=10-5	10
30-40	8=18-10	18
40-50	7=25-18	25
50-60	5=30-25	30

3

(a)

From the data given below, find median.

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

3

(a)

Find the Q₁ and Q₃ of the following:
4, 5, 6, 7, 8, 9, 12, 13, 15, 10, 20

3

(a)

Find the Q₁ and Q₃ of the following:
100, 500, 1000, 800, 600, 400, 7000 and 1200

3

(a)

The hourly wages of 7 workers are 19, 21, 32, 45,60,65,70. Find the Q₁ and Q₃ of these wages.

3

(a)

Find lower and upper Quartile from the data given below:

Wages (per hour):	20	25	30	35	40	45	50
Number of Workers:	5	7	6	10	5	4	4

3

(a)

From the following data of the marks obtained by 60 students of a class, find median.

Marks	20	30	40	50	60	70
No of students	8	12	20	10	6	4

3

(a)

If mean of a series is 25, median is 20 what will be the value of mode?

3

(a)

State and illustrate mathematical properties of median.

3

(a)

A histogram has two highest rectangles. What will be mode?

3

(a)

Give advantages and diaadvantages of quartiles, deciles and percentiles.

3

(a)