Statistics Class 9 Worksheets
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concepts. After studying the concepts of mathematics, revision of questions
related to that particular topic is very important for the students. This
assesses the preparation of the students. Students can assess themselves by its
own by solving the worksheets problems. Parents and teachers can also assess
the students by giving them these worksheets to the students to solve.
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for you. By solving these worksheets, you can increase the understanding of the
concepts learnt. These worksheets are prepared by experienced teachers and
subject matter experts.
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these questions to the students to test them. Unit tests can also be prepared
by the teachers using these questions.
Statistics Class 9 Worksheet
1. For which
value of x is the mode of the following data is 17?
15, 16, 17, 14, 17 16, 13, x, 17, 16,
15, 15
2. Find the
median of first sixteen odd numbers.
3. Find the
median of first ten prime numbers.
4. A school
has two sections. The mean mark of one section of size 40 is 60 and
mean mark of other section of size 60
is 80. Find the combined mean of all
the students of the school.
5. The
median of the following observations arranged in ascending order 8, 9,
12, 18, (x + 2), (x + 4), 30, 31, 34,
39 is 24. Find x.
6. The mean
weight of 180 students in a school is 50 kg. The mean weight of
boys is 60 kg and the mean weight of
the girls is 45 kg. Find the number of the boys and the number of girls in the
school.
7. The marks
secured by 15 students are 70, 55, 95, 62, 82, 65, 60, 68, 75, 58,
64, 85, 80, 90, 51. Find the median
marks.
8. If the
mean of 2x + 3, 3x + 4, x + 7, x – 3, 4x – 7 is 14. Find the value of x.
9. The mean
of 8 numbers is 15. If each number if multiplied by 2, what will be
the new mean?
10. Find the
median of the following data: 33, 31, 48, 45, 41, 92, 78, 51 and 61.
If 92 is replaced by 29, what will be
the new median?
11. The mean
of 9 numbers is 50. If one number is included, their mean becomes
55. Find the included number.
12. Find the
median of the following data: 15, 28, 72, 56, 44, 32, 31, 43 and 51. If 32
is replaced by 23, find the new
median.
13. Draw a
histogram of the following data.
Class |
10-20 |
20-30 |
30-40 |
40-50 |
50-60 |
60-70 |
Frequency |
5 |
10 |
15 |
10 |
5 |
5 |
14. Thirty children spent about the number of hours they watched TV programmes in the previous week. The result was as follow:
2 1 10 4 8 10
10 5 2 8 9 8
4 3 5 6 1 4
6 8 2 5 8 8
3 9 3 10 4 6
(a) Prepare a
frequency table for the given data.
(b) Find the
mode of the data.
15. The daily
minimum questions solved by a student during a week were as under:
Monday |
Tuesday |
Wednesday |
Thursday |
Friday |
Saturday |
30 |
35 |
40 |
36 |
28 |
37 |
Find the mean questions.
16. The blood
groups of 30 students of Class VIII are recorded as follows:
B, A, O, O, AB, O, A, O, B, A, O, B,
A, O, O, A, AB, O, A, A, O, O, AB, B, A, O,
B, A, B, O.
Represent this data in the form of a
frequency distribution table.
Which is the most common and which is the rarest blood group among these students?
17. Say the
statement are true or false.
Two sections of Class XII having 30
students each appeared for Science 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
Student having Marks above 80 are
exceptional. Student obtaining below 30 marks are failed.
(a) The no of
student who scored more than 89 marks is 2
(b) The number
who scored, marks between 50-69 is 22
(c) The number
of student who scored more than 49 marks is 32
(d) The range
of the marks is 85
(e) The no of
exceptional students are 4
(f) Student
who failed in the test are 7
18. A family with a monthly income of Rs. 20,000 had planned the following expenditure per month under various heads.
Heads |
Expenditure (in thousand rupees) |
Grocery |
5 |
Medicine |
4 |
Fuel |
2 |
Education |
5 |
Entertainment |
2 |
Rent |
1 |
Miscellaneous |
1 |
19. Draw a bar graph of the following data.
Product |
A |
B |
C |
D |
E |
F |
Number of consumers |
150 |
130 |
180 |
160 |
120 |
150 |
Maths Worksheets for Other Chapters of Class 9 |
1. Surface area and volume class 9 worksheets
3. Area of parallelograms and triangles worksheets
4. Triangles class 9 worksheets
5. Number system class 9 worksheets
6. Polynomials class 9 worksheets
7. Coordinate geometry class 9 worksheets
8. Linear equations in two variables class 9 worksheets
9. Introduction to Euclid’s geometry class 9 worksheets
10. Lines and angles class 9 worksheets
11. Quadrilaterals class 9 worksheet
12. Heron’s formula class 9 worksheet
14. Probability class 9 worksheet
Maths Worksheets for Other Classes |