Data Handling • Topic 1 of 8

Data Collection

Data is simply information we gather to answer a question: favourite fruits, number of brothers and sisters, the colours of cars passing the gate. In a primary classroom the first job is to collect it, and CTET wants you to know the honest distinctions. Data the child gathers firsthand for a purpose is primary data (asking twenty classmates which pet they like best). Data that already exists and is reused is secondary data (borrowing the school attendance register to find who was absent). The common methods at this level are observation (watching and noting without interfering, like counting red, blue and yellow cars for ten minutes), survey or interview (asking a set question and recording the replies), and experiment (doing something and noting the result, like tossing a coin thirty times). Once the raw answers are in, they look like a jumble, so the child organises them with tally marks in groups of five and writes a frequency table. There is also a quiet, intuitive idea here: the whole group you could ask is the population, and a smaller chosen part is a sample. In small classes you usually just ask everyone, so the class is the population. The pedagogy point CTET likes: data handling is the full cycle of question, collect, organise, represent and interpret, and it works best when children actually do it, measuring jumps or collecting leaves, rather than copying numbers from a board.

✅ Solved examples

1. A student asks all her classmates which game they like most and writes down each answer herself. The data she gathers is called:
Primary data, because it is collected firsthand by the investigator for a specific purpose. Reusing someone else’s existing records would be secondary data.
2. A teacher uses the school office attendance register from last month to find out how many children were absent. This is an example of:
Secondary data — it was already collected by someone else (the office) and is being reused, rather than gathered fresh for this question.
3. Counting how many red, blue and yellow cars pass the school gate in ten minutes, without stopping or questioning anyone, is which method of data collection?
Observation — information is gathered by watching and noting it down without interfering with what is happening.
4. In a class of 40, the teacher asks every child their favourite snack. With respect to that class, the 40 children form the:
Population — the entire group from which data is collected. A sample would be only a chosen part of that group.

✏️ Practice — try these, take hints as needed

1. Data that you collect yourself, firsthand, for your own question is called:
Opposite of secondary data.
Gathered first, by the investigator.
Primary data
2. Tossing a coin 30 times and noting heads or tails each time is which method of collecting data?
You perform an activity and record the outcome.
Not just watching, not just asking.
Experiment
3. A smaller part of the whole group, chosen to represent it, is called a:
Opposite of population.
You ask only some, not all.
Sample
4. The full process of posing a question, collecting, organising, representing and interpreting information is called the:
It is a repeating loop, not a single step.
Goes from question to conclusion.
Data handling cycle

📝 Topic test — 8 questions

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