Large data set

What you'll learn

1. 1

   A large data set is a big collection of information — like the heights of every student in your school or the temperatures in London for a whole year. 📊

2. 2

   Which of these is a large data set?

3. 3

   Here's a small part of a large data set — it shows the daily maximum temperature (°C) in London for one week in July. 🌡️

4. 4

   Let's find the mean (average) temperature for this week. 📝

5. 5

   Now you try — use the thermometer to show the temperature on Wednesday (21°C).

6. 6

   What was the range (highest minus lowest) of temperatures that week?

7. 7

   Why do we use large data sets instead of just a few numbers?