A pictogram or pictograph represents the frequency of data as pictures or symbols. Each picture or symbol may represent one or more units of the data.
Example :
The following table shows the number of computers sold by a company for the months January to March. Construct a pictograph for the table.
Month 
January 
February 
March 
Number of computers 
25 
35 
20 
Solution:
January 

February 

March 
Example:
The following pictograph shows the number of students using the various types of transport to go to school.
Walking 

Bus 

Bicycle 

Car 
a) How many students go to school by car?
b) If the total number of students involved in the survey is 56 how many symbols must be drawn for the students walking to school?
c) What is the percentage of students who cycle to school?
Solution:
a) 20 students
b) 56 students should be represented by 56 ÷ 4 = 14 symbols.
There are already 11 symbols on the table.
So, the number of symbols to be added for ‘Walking’ is 14 – 11 = 3
Example:
The pictograph shows the number of canned drinks sold by three different shops in a week.
a) What is the total profit of shop A, if the profit gained on each drink is 50 cents?
b) If the total number of cans sold is 180 how many symbols must be drawn for shop C?
c) What is the difference between the number of cans sold by shop B and the number of cans sold by shop C?
Solution:
a) Total profit of shop A= 20 × 4 × 0.5 = $40
b) 9 symbols must be drawn for shop C. (9 x 20 = 180)
c) Difference between shop B and shop C = 20 × 2 = 40 cans
The following video how lto create line plots or pictographs using given data, and answer questions based on given line plots or pictographs.
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