Finding the range of a data set by subtracting the smallest value from the largest.
Where your child meets this in real life: Understanding spread of data - temperature ranges, price variations, or score differences
Each SEAG paper has 28 maths questions. Questions 29 to 50 are multiple choice with five possible answers, and questions 51 to 56 need a short written answer. With 56 questions in 60 minutes across English and maths, that is about a minute per question.
SEAGReady breaks calculate the range into 2 steps, taught in order so each skill builds on the last.
Calculate the range from a small data set already arranged in order
Calculate the range from a data set where values are not arranged in order
Try three free questions from our calculate the range course. They start easy and get harder, so you can see where your child's confidence runs out. If they manage the last one without a hint, this topic is probably secure. If not, the steps above show where to start.
Molly's temperatures for five days are shown in order. What is the range of temperatures?
The number of cars in a car park over six hours is shown. What is the range?
The numbers of museum visitors over five days are shown in order. What is the range of visitors?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Erin recorded the temperatures in a school garden over five days. In order, they were: 8°C, 10°C, 12°C, 14°C, 17°C.
What is the range of temperatures?
The data is ordered, so the first and last values are the extremes: 8°C and 17°C
Step 1 of 2
Erin recorded the temperatures in a school garden over five days. In order, they were: 8°C, 10°C, 12°C, 14°C, 17°C.
What is the range of temperatures?
The range of temperatures is 9°C.
The key insight: The range is ONE number showing the spread, not two numbers!
Common mix-up: Range is 8 and 17. The range is the difference between them, not both values listed.
These are the misconceptions we see most often in calculate the range, including the ones our practice questions are specifically designed to catch.
Struggling with calculate the range? The real gap is often in one of these earlier topics.
Sitting the SEAG test this November? Read our last-month revision plan, Paper 1 vs Paper 2 and test day guide.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.
Free to start · no card needed