Living School · Chapter 1

Neft City: Data Crisis

Neft City is growing fast. The mayor needs your team to use data to make a smart decision. Are you ready to help?

First, tell us your first name

We use this on your final report.

Choose your role on the city team

Add your name and pick a role to begin.

🏛️ Mission Briefing

Mayor Reyes

Welcome to the team! Neft City's new sports arena is amazing — but the concession stands have long wait times. We surveyed 20 visitors and timed how long each one waited in line. Your job: study the data and tell us what the city should do.

🎯 Your Mission Goals

1 Sort the data from least to greatest.
2 Find the mean, median, mode, and range.
3 Build a histogram (bar graph) of the wait times.
4 Decide what the city should do.
5 Explain your decision using evidence.

New word? Tap a blue word to see what it means:

🔬 Data Lab

Here are the 20 wait times (in minutes). Click the numbers in order from least to greatest to sort them.

Step 1 · Sort the data

Click a number to place it in line. Click a placed number to send it back.

Numbers to sort

Sorted line (least → greatest)

Step 2 · Find the values 🔒 Locked

Use the formula cards to help you. After two tries you'll get a hint.

Meantotal ÷ number of values

Medianmiddle after sorting

Modenumber that appears most

Rangegreatest − least

📊 Build the Histogram

Count how many wait times fall in each interval. Use + and − (or click a bar) to set each bar's height.

Interpret your graph 🔒 Locked

🗳️ Decision Room

City Council

What should Neft City do about the long concession wait times? Choose one recommendation, then explain it with evidence from your data.

Explain with evidence

Use at least two pieces of evidence from your data and graph. (At least 18 words.)

0 words

🌆 City Reaction

City Status

🔬 Enrichment Challenge: The Outlier (optional)

Breaking news! A 21st visitor waited a huge 30 minutes. Add this outlier to the data. What happens to the mean and the median?

New mean of all 21 waits? Try it

New median of all 21 waits? Try it

Which measure changed more because of the outlier?

Why did one change more than the other? (1 sentence)

📰 Neft City News

Write a short public report: 3–5 sentences about what happened, what the data showed, and what Neft City should do next. (At least 35 words.)

Word bank — tap to add

Sentence frames — tap to add

0 words

📋 Read my report checklist

I explained the problem.
I used data evidence.
I made a recommendation.
I wrote in complete sentences.

🪪 Proof-of-Learning Passport

Neft City · Living School

—

Mission: Data Crisis at the Arena — Completed

Skills demonstrated

City Outcome: —

Reflection

One thing I understand better now is… One thing I still want to practice is…