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Class 9 Maths Worksheet for statistics

Given below are the Class 9 Maths Worksheet for statistics
a. Concepts questions
b. Calculation problems
c. Multiple choice questions
d. Long answer questions
e. Fill in the blank's

Question 1.
The runs scored by two teams A and B on first 60 balls in cricket match are given below:-
Class 9 Maths Worksheet for statistics

Represent the data of both teams on same graph by frequency polygon.

Question 2.
A random survey of no. of children of various age groups playing in a park was found as follows:-

Age (in years)	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 a histogram to represent the data above.

Question 3.
Two sections of Class IX having 30 students each appeared for mathematics olympiad. The marks obtained by them are shown below:
46 31 74 68 42 54 14 61 83 48 37 26 8 64 57
93 72 53 59 38 16 88 75 56 46 66 45 61 54 27
27 44 63 58 43 81 64 67 36 49 50 76 38 47 55
77 62 53 40 71 60 58 45 42 34 46 40 59 42 29
Construct a group frequency distribution of the data above using the classes 0-9, 10-19 etc., and hence find the number of students who secured more than 39 marks.

Answer

maths worksheet for class 9
From the table above, we find that the number of students who secure more than 39
marks is (15+12 + 10 + 6 + 3 + 1), i.e., 47

Question 4.
Find the mode of 14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18.

Answer

Mode is 14

Question 5.
The following table shows the no. of X cars sold by five dealers in a particular month.

Dealer:	A	B	C	D	E
Cars sold	60	40	20	15	10

Draw a pictograph.

Answer

statistics class 9 worksheet with solutions

Question 6.
The following data gives the no. of students of Mumbai state who went abroad for study during some years-

Years:	2000	2001	2002	2003	2004	2006
No of students	1400	1600	1250	1000	2000	2200

Represent it with a bar graph.

Answer

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Question 7.
The following table shows the interest paid by a company (in lakhs):

Year	1995-96	1996-97	1997-98	1998-99	1999-2000
Interests	20	25	15	18	30

(in lakh of Rs)
Draw a bar graph to represent it.

Answer

Question 8.
The following data gives the production of food grains for some years-

Years:	2000	2001	2002	2003	2004	2006
Production	120	150	140	180	170	190

(in 1000 tonnes)
Represent it with a bar graph.

Answer

Question 9.
The following data gives the demand estimates of the Government of India, Department of Electronics for the personal in the computer Sector during the Eighth plan period (1990-95)

Qualifications:	MCA	DCA	DCE	CL	ST
Personal required	40600	181600	18600	670600	1802900

Represent it with a bar graph.
Indicate with help of bar graph the course where estimated requirement is least.

Answer

Question 10.
The incomes and expenditure for 5 years of a family is given in a following data:

Years	1995-96	1996-97	1997-98	1998-99	1999-2000
Income (Rs. in thou)	100	140	150	170	210
Expenditure (Rs in thou)	80	130	145	160	190

Represent it with a bar graph.

Answer

class 9 statistics worksheet

Question 11.
The mean marks (out of 100) of boys and girls in an examination are 70 and 73, respectively. If the mean marks of all the students in that examination is 71, find the ratio of the number of boys to the number of girls.

Answer

let m and n be number of boys and girls respectively
Then total marks of boys and girls are 70m and 73n respectively
Total Mark of Students =70m + 73 n
Now
Mean = Total Marks/Total students
$71= \frac {70m + 73 n}{m+n}$
or
$71(m+n)=70m + 73 n$
$71(\frac {m}{n} + 1)= 70 \frac {m}{n} + 73$
$\frac {m}{n}=2$

Summary

This Class 9 Maths Worksheet for statistics with answers is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail.

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