Grade 2 · Unit 8: Data representation and interpretation

Collecting data

Ask a good question.

Counting traffic

How many rickshaws pass the school gate? We can count and record data. Good data helps answer questions.

A tally chart

Make one tally mark for each vehicle. Group the marks in fives. The total for each is the frequency.

Good survey questions

A good survey question is clear. Give a small number of choices. Everyone should be able to answer.

Planning a survey

Plan before you collect. Decide who to ask. Check your tallies add up.

What I learnt

• I can plan a survey.
• I can collect data in a tally chart.