Prepare a discrete frequency distribution of shoe size of your class XI students.

7	6	7	8	9	6	7	9	10	12	7	7
6	8	9	10	11	11	10	9	12	11	10	8
9	7	6	10	11	12	10	9	9	8	7	6

6

(a)

Convert the series given below into exclusive series.

Age	No of Students
(x)	(f)
0-9	3
10-19	4
20-29	10
30-39	7
40-49	6

6

(a)

A survey revealed that daily expenditure of 30 families:
Daily Expenditure (Rs)

11	20	26
12	21	27
14	21	28
16	22	28
16	22	31
17	23	32
18	23	32
18	24	33
20	25	36
20	25	38

Present these data in a continuous series using the following class intervals. 10-14,15-19, 20-24, 25-29, 30-34,35-39.

6

(a)

Convert the following simple frequency distribution into cumulative frequency distribution.

Class Interval	Frequency
0-10	6
10-20	15
20-30	20
30-40	4
40-50	3
50-60	2

6

(a)

Change the following cumulative frequency distributions into normal frequency distributions.

Marks	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

Wages	No. of Workers (C.F.)
More than10	50
More than 20	35
More than 30	25
More than 40	20
More than 50	18
More than 60	10

6

(a)

Explain the 'exclusive' and 'inclusive' methods used in classification of data.

6

(a)

Explain different ways of classifying data.

6

(a)

Explain the steps involved in construction of a discrete series

6

(a)

What is a variable? Differentiate between discrete and continuous variable.

6

(a)

Differentiate between Individual, discrete and continuous series.

6

(a)