Data Handling Class 7 Worksheet
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Data Handling Class 7 Worksheet 1
1.
Choose the correct answer in each of the
following.
a.
The graphical representation of data using a circle is called a
i. bar graph ii. pie chart iii. line graph iv. pictograph
b.
The arrangement of numerical data in ascending or descending order is called
i.
line graph ii. frequency iii. arranged data iv. none of these
2.
Fill in the blanks to make the statements true.
a.
The average of a set of numbers is termed as ___________.
b.
Data graphically represented using pictures is known as the ___________ graph.
c.
Data graphically represented using bars is known as the ___________ graph.
d.
Bars are of the same ___________ and the distance between any two successive
bars is the ___________.
3.
Arrange each of the following data as an array
and find the range.
a.
35, 18, 38, 74, 43, 12, 8, 70, 63, 72, 57
b.
18, 125, 16, 3, 92, 36, 45, 113, 78, 52, 45, 58, 46, 28, 108
4.
Arrange each of the following data as an array
and find the mean.
a.
43, 15, 18, 24, 23, 19, 28, 23, 21, 49, 23, 44, 28, 18, 32
b. 42, 46, 38,
44, 32, 53, 38, 40, 56, 48, 49, 36
5.
Make a frequency table for the following data
and hence calculate the mean:
4, 6, 5, 1, 3, 4, 2, 3, 3, 2, 1, 6, 4, 5,
5, 1, 1, 3, 2, 5, 2, 5, 3, 3, 4, 1, 4, 3, 3, 2
6. The sales of XYZ store during the first six
months are given below.
|
Months |
January |
February |
March |
April |
May |
June |
|
Sales (in lakhs Rs) |
7 |
6 |
5 |
7 |
8 |
4 |
Represent
the data using
a.
a bar graph
b.
a line graph
7. The following table shows the monthly expenses
of a family.
|
Item |
Food |
Clothing |
Rent |
Education |
Miscellaneous |
Savings |
Total |
|
Expenses (in Rs) |
9000 |
5000 |
6000 |
5000 |
1000 |
4000 |
30000 |
Draw
a pie chart to represent the given data.
8. The following table shows the central angle of
a pie chart. Taking total number of students as 100, fill in the table as shown
representing the percentage of students obtaining the various grades.
|
Result |
Centrals angels |
Percentage of students |
|
Grade A |
90° |
90°/360° × 100 = |
|
Grade B |
180° |
|
|
Grade C |
60° |
|
|
Grade D |
30° |
|
|
Total |
360° |
100% |
Data Handling Class 7 Worksheet 2
1.
Choose the correct answer in each of the
following.
a.
The collection of information in the form of numerical figures is called
i.
data ii. array iii. observation iv. pie
b. The difference between the highest
and the lowest value of observations in a data is called the
i. frequency ii. range iii. data iv.
mean
c.
The number of times a particular observation occurs in a set of data is called
the
i.
range ii. class
interval iii. frequency iv. data
2.
Fill in the blanks to make the statements true.
a. A graph drawn by plotting points
and joining the points by means of a straight line is known as the ___________
graph.
b. The mean of scores 6, 12, 15, 14,
12, 8, 3, 4, 7, 8 obtained by 10 students in a particular test is ___________.
3. Arrange the following marks obtained by 12 students in a test in
ascending order and find their mean: 50, 68, 54, 48, 72, 56, 60, 74, 53, 43
4. Draw a bar graph for the following data
representing the daily wages of 60 workers.
|
Wages (per day) |
70 |
80 |
90 |
100 |
110 |
120 |
|
Numbers of workers |
6 |
9 |
8 |
15 |
10 |
12 |
5. The following data shows the various newspapers
bought by a certain group of people.
|
Newspaper |
A |
B |
C |
D |
E |
|
Numbers of people |
40 |
60 |
120 |
100 |
80 |
Represent
this data using a pie chart.
6. The following data shows the consumption of
electricity by a family in six consecutive months. Represent the data by using
a line graph.
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
June |
|
Numbers of
units consumed |
160 |
200 |
220 |
320 |
380 |
420 |
7. The average temperature of six consecutive
weeks of a city is given below.
|
Weeks |
1 |
2 |
3 |
4 |
5 |
6 |
|
Temperature (in
°C) |
23 |
25 |
26 |
24 |
22 |
23 |
Represent
the above data by
a.
a line graph
b.
a bar graph
8.
Find the range and the mean for the following
data:
18,
45, 12, 18, 20, 15, 25, 38, 40, 15, 48, 20, 12, 34, 24
9. The following data shows the number of members staying in each
flat of a housing complex consisting of 40 flats.
3 2 5
1 2 5
4 1 2
4
4 3 5
4 4 4
5 2 4 2
3 2 2
3 2 3
2 6 3
4
6 4 4
4 4 2
4 5 6
3
Make a frequency distribution table using
tally marks and represent the data using a bar graph. Also, calculate the mean.
10. Using the given bar graph, form a frequency
distribution table showing the various books kept in a particular school
library.
Answer the following questions.
a. The books of which subject are
maximum in number?
b. The books of which subject are
minimum in number?
c. How many English books are there?
d. How many Hindi books are there?
 |
| Maths Worksheets for Other Chapters of Class 7 |
1. Integers questions for class 7
2. HCF and LCM questions for class 7
3. Fraction questions for class 7
4. Decimals class 7 worksheets
5. Exponents and powers class 7 worksheet
6. Rational numbers class 7 worksheet
7. Algebraic expressions worksheet for class 7
8. Linear equations class 7 worksheet
9. Ratio and proportion class 7 worksheet
10. Percentage worksheet for class 7
11. Profit and loss class 7 worksheet
12. Simple interest worksheet for class 7
13. Lines and angles class 7 worksheets
14. Triangle and its properties class 7 worksheets
15. Congruence of triangles class 7 worksheets
16. Symmetry worksheet for class 7
17. Constructions worksheet for class 7
18. Perimeter and area class 7 worksheets
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