Draw a histogram representing the following frequency distribution:

Marks	No. of students
0-10	3
10-20	5
20-30	8
30-40	10
40-50	7
50-60	2

5

(a)

Draw a frequency polygon to represent the following information:

Class	Frequency
25-29	5
30-34	15
35-39	23
40-44	20
45-49	10
50-54	7

5

(a)

Draw a histogram and frequency polygon of the following data:

Marks	No.of students
20-30	5
30-40	12
40-50	6
50-60	20
60-70	18
70-80	10
80-90	16
90-100	3

5

(a)

The mean of 10,12,18,13,x and 17 is 15. Find the value of x.

5

(a)

Arithmetic mean of terms 21,16,24,x,29,15 is 23. Find this value of x.

5

(a)

The following observations have been arranged in ascending order. If the median of the data in 65, find the value of x.
32,35,50,51,x,x+2,73,76,83,90

5

(a)

A survey conducted by an organisation for the cause of illness and death among the women between the ages 15 - 44 (in years) worldwide, found the following figures (in %):

S.No.	Causes	Female fatality rate (%)
1.	Reproductive health conditions	31.8
2.	Neuropstchiatric conditions	25.4
3.	Injuries	12.4
4.	Cardiovascular conditions	4.3
5.	Respiratory conditons	4.1
6.	Other causes	22.0

(i) Represent the information given above graphically.
(ii) Which condition is the major cause of women's ill health and death worldwide?
(iii) Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above being the major cause.

5

(a)

Survey on the playing children of various age group is:

Age(in yrs)	No. of Children
1-2	5
2-3	3
3-5	6
5-7	12
7-10	9
10-15	10
15-17	4

Draw the histogram of above data

5

(a)

Represent the following data by means of a frequency polygon.

Marks	Frequency
41-45	4
45-49	10
49-53	15
53-57	18
57-61	20
61-65	12
65-69	13

5

(a)

The % of marks obtained by students in the annual examination of a class in mathematics are given below:

Percentage of marks	No. of students
0-10	8
10-30	32
30-45	18
45-50	10

(i) How many students get less than 30% of marks?
(ii) Represent the data by histogram.
(iii) Which value is depicted by a student Ram obtaining the highest marks in the interval 45-50?

5

(a)