Pictograph:There are many methods of representing numerical data pictorially. One of the method is to use picture symbols. Representation of numerical data by using picture symbols is called a Picto-graph.
Interpretation of picture graph :
Interpretation of picture graph means drawing some conclusions from it. The first step in interpretation is to know what it represents or what is the information given by it. We also see the picture symbol and find what it represents.It is also important to know the number of units represented by one picture symbol.
Illustrative Example :
Total number of cakes sold by 5 companies are as follows :
Company
Number of Cakes
A
80
B
120
C
90
D
40
E
60
Let = 10 cakes.
So the number of cakes sold by the companies are
Company
Number of Cakes
A
8
B
12
C
9
D
4
E
6
The pictograph representing the above data is shown below :
Company
Number of Cakes
A
B
C
D
E
Interpret the picture graph and answer the following questions :
1) Which company produces maximum number of cup-cakes?
2) Which company produces minimum number of cup-cakes?
3) How many more cup cakes produced by company E than company D?
4) what is the total number of cup cakes produced by all the 5 companies? Solution :
1) Company B produces maximum number of cup cakes.
Cup cakes produced by B = 12
But = 10 cakes
∴ cakes produced by company B = 12 x 10 = 120 .
2) Company D produces minimum number of cup cakes. They are (4 x 10) = 40.
3) Company E produces 6 cup cakes and company D produces 4 cup cakes. So E produces 2 cup cakes more than D.
4) Total number of cup cakes produced by all the 5 companies are 390.