Data handling involves visually representing data using graphs, charts, and diagrams to more easily interpret and understand the information. It includes bar graphs, pictographs, and tally marks. A bar graph uses bars of uniform width to visually depict the frequency of different data points, with the length of each bar corresponding to the value. Pictographs use pictures or symbols to represent data values, where each symbol represents a set quantity. Tally marks are used to count frequencies by placing diagonal lines through groups of four vertical lines.

1. BY
BODHADITYA ACHARYA

2. Data handling is the way in which Data can be
represented graphically to give a clear idea of whatit
represents. It is easier to interpret and organize data
using pictorial representation.
Data handling includes bar graph, pictograph and tally
marks.

3. It is the way of representing data visually. Bars areof
uniform width and can be drawn horizontally or
vertically with equal spacing between them. The
length of each bar represents the given number
frequency.

4. 1.Y-axis
2.X-axis
4.scale
3.bars

5. 1. Y-axis: The line on a graph that runs vertically (up-down)through
zero. It is used as a reference line so you can measure fromit.
2. X-axis: The line on a graph that runs horizontally (left-right)
through zero. It is used as a reference line so you canmeasure
from it.
3. Bars: They can be horizontal or vertical. Bars of a bar graph are
used to show how large each valueis.
4. Scale: A scale on a graph is what we use to measure the distance
between the givencoordinates.

6. Sweets Sold on aMonday
16
14
12
10
8
6
4
2
0
Toffee
Crisp
Snickers Bounty Kitkat
Mars Twix
Sweets
Number
What is the most popularsweet
bought on Mondays? Mars
It is easy to answer
this question from a
graph.
There is only one
set of data onthis
graph.

7. The representation of an information through pictures
is called a pictograph. Pictographs use relative sizes or
repetitions of the same icon, picture, or symbol to
show comparison. Also called pictogram, pictorial
chart, pictorial graph, or picturegraph.

8. Badgers
Tigers
Peacocks
Elephants
Pigs
Spiders
Represents two books
Example of pictographs

9. A method of counting frequencies, according to some
classification, in a set of data. For ease of counting,
every fifth observation is represented by a diagonal
line crossing the previous four to make a five-barred
gate. Tally charts are often used with grouped
observations

10. Solved
questions-
Reading Group Number of books Read Frequency
Badgers
16
Tigers
14
Peacocks
23
Elephants
4
Pigs
2
Spiders 13

11. Key:
picture =10people
How many children walk to
school? 65
(6 x 10)+5=

12. Ekta is asked to collect data for sizeof shoes of students
in her Class VI. Her finding are recorded in the
manner shown below :
Ekta prepared a table using tally marks.
6
8
(i) the size of shoes worn by the maximumnumber
of students. 6
(ii) the size of shoes worn by the minimum numberof
students. 8

13. Read the adjoining bar graph showing the number
of students in a particular class of aschool.
a) What is the scale of thisgraph?
b) How many new students are added everyyear?
c) Is the number of students in the year 2003twice that
in the year2000?
=1
0
1unit length
students
1unit length =10students
10
10students
30
60
yes