Page 234 - Math Genius C4

E:\Working\Orange_Education\Math_Genius_4\Open_Files\Chap-13
\\September 30, 2025 12:04 PM Bharat Arora P-9 Reader _________________________ Date: ___________________74

Data

Information collected in the form of numerical figures is called data. By presenting it
in an organised way, meaningful information can be gathered from it.

Organising Data

Data can be organised in a table using tally marks which is a quick way of keeping
track of numbers or observations in groups of five.

We use vertical line(s) (|) to represent tally marks. We draw one vertical line (|)
for every observation (number). For upto four observations we draw four vertical
lines and the fifth observation is represented by a line running diagonally over the
previous four vertical lines.

Observations 1 2 3 4 5 6
tally marks | || ||| |||| |

Look at the following table. It represents class IV students who like different fruits.

Fruits tally marks Number of students

Apple |||| 4
Mango 10

Banana ||| 8

Orange | 6
Papaya |||| 4

Pineapple ||| 3

Now, consider the following questions and their answers by observing the above table.
1. How many students like banana? ________________
8
2. Which fruit do the most students like? ________________
Mango
3. Which fruit is liked by the least number of students? ________________
Pineapple
4. Which fruits are liked by an equal number of students? ________________
Apple and Papaya
example: A group of children went to the zoo with the class teacher. After visiting
the zoo, the children were asked about their favourite animal and their responses
were noted down as given here:

Lion Tiger Elephant Monkey Bear Monkey Zebra Elephant
Zebra Bear Elephant Tiger Monkey Lion Lion Tiger
Tiger Tiger Lion Monkey Zebra Monkey Tiger Elephant
Elephant Bear Tiger Lion Tiger Monkey Bear Lion
Lion Tiger Elephant Monkey Tiger Lion Zebra Bear

232 Mathematics-4