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Wat is die mediaan van { 11 , 10 , 14 , 86 , 2 , 68 , 99 , 1 } ?

  1. 1,2,10,11,14,68,85,99

  2. Daar is 8 punte in die datastel.

  3. Die sentrale posisies van die datastel is tussen 4 en 5.

  4. 11 is in posisie 4 en14 is in posisie 5.

  5. die mediaan van die datastel { 1 , 2 , 10 , 11 , 14 , 68 , 85 , 99 } is

    ( 11 + 14 ) ÷ 2 = 12 , 5

Modus

Modus

Die modus is die datawaarde wat die meeste voorkom. Dit beteken dit is die mees herhaalde waarde in 'n stel data.

Metode vir die berekening van die modus: Tel die hoeveelheid kere wat elke getal voorkom. Die modus is die datawaarde wat die meeste verskyn het.

Die modus word bereken in 'n gegroepeerde stel data, of vanaf enkele data items.

Vind die modus van die datastel x = { 1 , 2 , 3 , 4 , 4 , 4 , 5 , 6 , 7 , 8 , 8 , 9 , 10 , 10 }

  1. Datawaarde Frekwensie Datawaarde Frekwensie
    1 1 6 1
    2 1 7 1
    3 1 8 2
    4 3 9 1
    5 1 10 2
  2. Die getal 4 kom die meeste voor.

  3. Die modus van die datastel x = { 1 , 2 , 3 , 4 , 4 , 4 , 5 , 6 , 7 , 8 , 8 , 9 , 10 , 10 } is 4 want die getal 4 kom die meeste voor.

'n Datastel kan meer as een modus hê. Byvoorbeeld, beide 2 en 3 is modusse in die stel 1, 2, 2, 3, 3. As alle getale in die datastel 'n gelyke aantal kere verskyn, dan is dit korrek om te sê die stel het meer as een modus of geen modus.

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Maatstawe van verspreiding

Die gemiddeld, mediaan en modus is maatstawe van sentrale neiging - dit beteken hulle gee inligting van die sentrale datawaardes in 'n stel. Waneer 'n mens data beskryf, is dit soms nodig om die verspreiding van die datawaardes te bereken. Maatstawe van verspreiding gee inligting van hoe die datawaardes in 'n stel versprei is rondom die gemiddelde waarde. Sommige maatstawe van verspreiding is variasiewydte, persentiele en kwartiele.

Variasiewydte

Variasiewydte

Die variasiewydte van 'n datastel is die verskil tussen die laagste waarde en die hoogste waarde in die stel.

Metode: Berekening van die variasiewydte

  1. Vind die hoogste waarde in die datastel.
  2. Vind die laagste waarde in die datastel.
  3. Trek die laagste waarde van die hoogste waarde af. Die verskil is die variasiewydte.

Vind die variasiewydte van die datastel x = { 1 , 2 , 3 , 4 , 4 , 4 , 5 , 6 , 7 , 8 , 8 , 9 , 10 , 10 }

  1. 10 is die hoogste waarde en 1 is die laagste waarde.

  2. 10 - 1 = 9
  3. Vir die datastel x = { 1 , 2 , 3 , 4 , 4 , 4 , 5 , 6 , 7 , 8 , 8 , 9 , 10 , 10 } , is die variasiewydte 9.

Kwartiele

Kwartiele

Kwartiele is die drie datawaardes wat 'n geordende datastel in vier groepe met gelyke hoeveelhede datawaardes verdeel. Die mediaan is die tweede kwartiel.

Die kwartiele van 'n stel word gevorm deur die twee grense, weerskante van die mediaan, wat die stel verdeel in vier gelyke dele. Die laagste 25% van die data word gevind onder die eerste kwartiel, dit word ook genoem die “onderste kwartiel”. Die mediaan, of tweede kwartiel deel die stel in twee gelyke dele. Die laagste 75% van die datastel is onder die derde kwartiel, ook genoem die "boonste kwartiel". Byvoorbeeld:

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Siyavula textbooks: wiskunde (graad 10) [caps]. OpenStax CNX. Aug 04, 2011 Download for free at http://cnx.org/content/col11328/1.4
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