Page 171 - Math Skill - 4

Data Handling 169

Tally Marks Fact-o-meter
While representing a given data mainly the large data, In tally marks, we represent 1 by ,
we might do errors in counting. To avoid it and to 2 by , 3 by , 4 by , 5 by ,
consolidate a large data easily, we use tally marks. 6 by and so on.

How to use this, we learn through the given examples.

Let’s Attempt

Example: The following data shows the flavour of ice-cream sold in an ice-cream parlour.

Strawberry, chocolate, vanilla, strawberry, strawberry, vanilla, chocolate, mango,
mango, vanilla, chocolate, strawberry, chocolate, chocolate, vanilla, mango,
orange, orange, orange, chocolate, vanilla, strawberry, chocolate, orange, vanilla,
mango, strawberry, chocolate, chocolate, chocolate
Prepare a tally chart for the given data and then answer the following questions:

(a) Which ice-cream was sold in maximum number?
(b) Which two flavours of ice-creams were sold minimum and equally?
Solution: The tally chart is as follows:

Ice-cream flavour Tally Marks Number of ice-cream

Strawberry 6

Chocolate 10

Mango 4

Orange 4

Vanilla 6

Total 30

(a) Chocolate ice-cream was sold in maximum number.
(b) Mango and orange flavoured ice-creams were sold minimum and equally.

Pictograph
Pictographs are the pictorial representation of given data. We use a symbol to represent the
information where a symbol can be equal to 1 or more units.

Let us take an example.
The following pictograph shows the number of bicycles sold by a company in the first 5 months
of the year.

January February March April May

50 35 60 30 20