📝 Student Worksheet — Session 4: Organizing What You Found

Data Science for Young Minds · Grade 3 · Ages 8–9

Name

Date

Class Period

📚 Part 1 — Vocabulary

Raw data

Frequency

Frequency table

Category

Row

Column

🎮 Part 2 — Messy-to-Clean Challenge

Here is raw data from a "favorite season" survey. 20 people were asked. Turn it into a frequency table below.

Summer, Winter, Fall, summer, SPRING, Winter, Fall, Spring, summer, Fall, Winter, spring, Summer, fall, Winter, Summer, Spring, winter, Summer, Fall

💡 Tip: "Summer", "summer", and "SUMMER" are all the same category!

Season (Category)	Tally Marks	Frequency
Summer
Winter
Fall
Spring
TOTAL

✅ Check: Does your Total equal 20? ☐ Yes ☐ No — look for a mistake!

🔬 Part 3 — Read a Frequency Table

Use this frequency table to answer the questions below.

Favorite Fruit	Tally	Frequency
Apple	\| \| \|	3
Banana	\|\|\|\|̶ \| \| \|	8
Orange	\|\|\|\|̶	5
Grape	\| \| \| \|	4
Total		20

Which fruit is most popular?

Which fruit is least popular?

How many more people chose Banana than Apple?

How many people were surveyed in total?

✏️ Part 4 — Fix the Categories

Each frequency table below has a problem with its categories. Describe the problem and write a fix.

❌ Problem Table 1: Favorite Sport

Sport	Frequency
Sports I like	7
Other sports	13

What's wrong?

How would you fix it?

❌ Problem Table 2: How Do You Get to School?

Method	Frequency
Walk or bus	9
Bus or car	11

What's wrong? (Hint: can someone who takes the bus fit in both rows?)

How would you fix it?

📊 Part 5 — My Own Frequency Table

Use your mini-survey tally sheet from Session 3 to fill in this frequency table.

My survey question:

Answer (Category)	Tally Marks	Frequency




TOTAL

Most common answer: Least common answer:

✅ Does your Total match how many people you asked? ☐ Yes ☐ No — find the mistake!

✍️ Part 6 — Think About It

What is the difference between raw data and a frequency table?

Why is it important that your frequency total matches how many people you surveyed?

Look at your frequency table from Part 5. What is one thing you notice about your data?

🏠 Take-Home Challenge — Table Spotter!

Find a table with data in real life this week — in a book, a newspaper, on a menu, on a cereal box, or anywhere! Draw or describe it below.

Where did I find the table?

What does the table show?

What is one thing you can learn quickly from looking at the table?

Does the table have column headers? ☐ Yes ☐ No Does it have a total? ☐ Yes ☐ No ☐ Can't tell