Lesson 2: Tally Charts and Frequency Tables

About 30 minutes — Activity-based lesson

What You Will Learn

This lesson covers:

What a tally chart is: counting how many times each answer occurs
Converting tallies to numbers (frequency)
Making a frequency table
Activity: create a tally chart from your survey data

What a tally chart is: counting how many times each answer occurs

This section covers the key ideas about what a tally chart is: counting how many times each answer occurs. Discuss with your group or family and explore the concepts together.

Converting tallies to numbers (frequency)

This section covers the key ideas about converting tallies to numbers (frequency). Discuss with your group or family and explore the concepts together.

Making a frequency table

This section covers the key ideas about making a frequency table. Discuss with your group or family and explore the concepts together.

Activity: create a tally chart from your survey data

This section covers the key ideas about activity: create a tally chart from your survey data. Discuss with your group or family and explore the concepts together.

Check Your Understanding

1. What is a frequency?

Answer: Frequency means how many times something occurs. If 7 people said 'blue,' the frequency of blue is 7.

2. How is a tally chart different from a data table?

Answer: A data table shows every individual response. A tally chart summarizes by counting how many times each answer appeared. Tally charts are shorter and show the big picture.

3. How do you convert tally marks to a frequency table?

Answer: Count each group of tally marks and write the number. Five tally marks (||||) = 5. Then list each category with its frequency number.

4. Why are frequency tables useful?

Answer: Because they show you at a glance which answers were most and least common. You can immediately see patterns without reading every individual response.

Key Takeaways

What a tally chart is: counting how many times each answer occurs
Converting tallies to numbers (frequency)
Making a frequency table
Activity: create a tally chart from your survey data

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Continue to Lesson 3: Creating Categories

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