Bureau Home » Water Information » Water Dictionary » first quartile

• Water Information
  • Water data
    • Design Rainfalls
    • Environmental Monitoring Sites
    • Geofabric
    • Groundwater Dependent Ecosystems Atlas
    • Hydrologic Reference Stations
    • National Groundwater Information System
  • Water status
    • Australian Water Resources Assessment
    • National Water Account
    • Water Restrictions
    • Water Storage
  • Water forecasts
    • Floods
    • Streamflow Forecasts
• Regulations
  • Find your organisation
  • About the Regulations
    • Background
    • Categories of Persons
    • Categories of Water Information
    • Subcategories of Water Information
    • Amendments
  • Regulations Data
    • Data delivery
    • Metadata and Contextual Information
    • Data licensing
  • Incorporated documents
    • Commercially Sensitive Sites
    • Metadata and Contextual Information Requirements
    • Persons and Classes of Persons
  • Funding program
• Standards
  • Water Data Transfer Format
    • About WDTF
    • Download WDTF
    • WDTF Validation
    • WDTF Tools
    • WDTF FAQ
  • About Standards
    • National Water Information Standards
    • Water Data Collection Standards
  • Business Forum
    • Acoustic Doppler Current Profiler Standards
    • New South Wales Hydrometric Standards
    • Water Quality Metadata
  • Water Accounting Standards Board
    • Water accounting story
    • Standards development
    • Frequently asked questions
    • About Water Accounting Standards Board
    • Australian Water Accounting Standard 1
    • Effects analysis
    • Feedback responses
    • Assurance Engagements on General Purpose Water Accounting Reports
    • Resources and links
    • Contact us
• News and events
  • Presentations
    • National Climate and Water Briefings
    • National Water Information Briefings 2011
    • Water Information Industry Seminars 2009
    • Water Information Industry Seminars 2007-08
    • Webinars
• About
  • Water information role
  • Water contacts
    • National Water Account contacts
    • Hydrometeorology contacts
    • Water regulation contacts
    • Water Accounting Standards Board contacts
  • Publications
  • Video
  • Consultation
  • Work in progress
  • Water research
    • Water Information Research and Development Alliance
    • Australian Research Council Linkage Projects

Australian Water Information Dictionary

first quartile

The first quartile of a set of numbers is the value in which 25% of the numbers are below it and 75% of the numbers are above it when the numbers are arranged in ascending (increasing) order.

Synonym: 25% quartile

This definition applies to:

• Glossary for Water forecasts: Seasonal streamflow
• Glossary for Water forecasts: Dynamic streamflow

Related links

• Rain, River & Storage Data

Water links

• Water Act 2007
• Water Regulations 2008
• Water Market Reports
• Water Dictionary
• Publications
• News
• Contact Us

---

---