Median

{
  "id": "MLC-T-ENV-016872",
  "term": "Median",
  "field": "Environment",
  "definition": "1. A measure of central tendency, the value of the case marking the midpoint of an ordered list of values of all cases; a statistic used primarily with ordinal variables and asymmetrically distributed interval-ratio variables.\n\n2. The midpoint value obtained by ranking all values from highest to lowest and choosing the value in the middle. The median divides a population into two equal halves. (NIAID 2000)\n\n3. The middle number or center value of a set of data in which all the data are arranged in sequence. {ORD} {OW/EAD} {OPP} {OW/TSC} {OAR/OAQPS} {OECA} {ORCR}\n\n4. The middle value in a population distribution, above and below which lie an equal number of individual values; midpoint. (CARB 2000)\n\n5. A measure of central tendency. The simplest division of a set of measurements is into two parts - the lower and the upper half. The point on the scale that divides the group in this way is called the \"median.\" (Last 1983)\n\n6. The middle value of n numbers (if n is even it is the arithmetic mean of the middle two numbers). (NZ 2002)\n\n7. Middle value of a set of ordered values (i.e., half the numbers are less than or equal to the median value). A median is the 50th percentile of the data.\n\n8. The middle number or center value of a set of data in which all the data are arranged in sequence.\n\n9. The middle value of a set of ordered values (i.e., half the numbers are less than or equal to the median value). A median is the 50th percentile of the data.",
  "subject": "Policy and guidance",
  "references": [
    "Program Evaluation Glossary",
    "Thesaurus of Terms Used in Microbial Risk Assessment",
    "Forum on Environmental Measurements (FEM) Glossary",
    "National Air Toxics Assessment (NATA) Glossary",
    "AirToxScreen Glossary of Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/median/"
}