Skip to content

Loading…

Home
Subjects
Past papers
Key terms
Pricing

My courses

Select your courses

Loading…

Subjects

History
Geography
Biology
Chemistry
Physics
Combined Science
Mathematics
Classics
Business
Computer Science
Religious Studies
Statistics
Physical Education
Design and Technology
Food Preparation and Nutrition

Resources

Browse courses
Past papers
Key terms & definitions
Pricing

About

Sign up
Log in
Privacy Policy
Terms of Service

© 2026 GradeGen

Not affiliated with any exam board.

Lower quartile — Edexcel GCSE Statistics Definition | GradeGen

Home
Statistics
Key terms
Lower quartile

GCSE Statistics · key term

Lower quartile

Definition

The value marking the lower quarter of an ordered dataset, written as $\text{LQ}$ .

Used by Edexcel

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Specification 2a.09, 2c.01, 2c.02 · Paper 1, Paper 2

The value one-quarter of the way through an ordered distribution, also written LQ or $Q_1$ .
A box plot marks the lower quartile, median and upper quartile. Its box contains the middle 50% of the data.
Revise: Determining skewness

Related key terms

Standard deviation
Upper quartile
Interquartile range
Cumulative frequency
Decile

Revise Statistics with GradeGen

Create a free account to read GCSE Statistics revision notes for your exam board and track your progress.

Sign Up to Start Revising Log In

The boundary marking approximately the lowest 25% of an ordered data set, written $Q_1$ or LQ.

Revise: Calculating measures of spread

Revise: Identifying outliers

Edexcel Statistics past papers

Interdecile range

Interpercentile range

Linear interpolation