Form 1 has 5 children, Form 2 has 6 children, Form 3 has 4 children, and Form 4 has 7 children. Apples were eaten 8 times, mangoes 6 times, and oranges 5 times. The total number of children in Forms 1 through 4 is 5 + 6 + 4 + 7 = 22.

2. Essential Questions.
• Why do we collect data?
• How data can be collected and recorded?

3. 0
1
2
3
4
5
6
Form 1 Form 2 Form 3 Form 4
Apples
Mangoes
Oranges
 How many children are in
Form One?
 Which class has the most
children?
 Which fruit is eaten the
most?
 Which fruit is eaten the
least?
 Calculate the total
number of children that
are in Form 1 to 4.

4. Collecting Data
• An Hypothesis is an idea that you want to
investigate to see if it is true or false. For
example, you might think that most people in
your school get there by bus. You should
investigate this using a survey. A tally chart
can be used to record your data.

5. How Data can be collected?
• Survey: In research, a survey is list of
questions aimed at extracting specific data
from a particular group of people. This could
be conducted by phone, mail, internet, and
sometimes face – to – face.

6. Tally Chart

7. Bar Chart

9. Frequency Table
Flavour Tally Frequency
Ready salted 1111 05
Salt and Vinegar 1111 1111 09
Cheese and Onion 1111 11 07
Prawn Cocktail 111 03
Smokey Bacon 1111 1 06