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Relatiewe frekwensie vs. Waarskynlikheid

Daar is twee maniere om die waarskynlikheid van enige gebeurtenis van 'n lukrake eksperiment te bepaal:

  1. Bepaal die totale aantal moontlike uitkomstes en bereken die waarskynlikheid deur die definisie te gebruik of
  2. doen die eksperiment en bereken die relatiewe frekwensie van elke uitkomste.

Relatiewe Frekwensie word gedefiniëer as die aantal kere wat 'n gebeurtenis in 'n eksperiment plaasvind, gedeel deur die aantal kere wat die eksperiment gedoen is.

Dit verg 'n baie groot aantal eksperimente voor die relatiewe frekwensie van gebeurtenis gelyk is aan die waarskynlikheid daarvan. Byvoorbeeld: die data in [link] verteenwoordig die uitkomste van 100 proewe van 'n statistieke eksperiment (die gooi van 'n muntstuk 100 keer).

Uitslae van 100 gooie van 'n regverdige muntstuk. K beteken die muntstuk het met sy kop na bo geland en S beteken die muntstuk het met sy stert na bo geland.
K S S K K S K K K K
K K K K S K K S S S
S S K S S K S K S K
K K S S K S S K S S
S K K K S S K S S K
K S S S S K S S K K
S S K S S K S S K S
K S S K S S S S K S
S K S S K K K S K S
S S S K K S S S K S

Die volgende twee voorbeelde wys dat die relatiewe frekwensie van 'n gebeurtenis nie noodwendig gelyk is aan die waarskynlikheid daarvan nie. Relatiewe frekwensie behoort dus eerder beskou te word as 'n benaderde waarskynlikheid.

Bepaal die relatiewe frekwensie wat met elke uitkoms in die volgende data geassosiëer word [link] .

  1. Daar is twee unieke uitkomste: K en S.

  2. Uitkoms Frekwensie
    K 44
    S 56
  3. Die statistieke eksperiment van die muntstuk gooi was 100 keer uitgevoer. Daarom was daar 'n totaal van 100 proewe.

  4. Waarskynlikheid van K = frekwensie van uitkoms aantal proewe = 44 100 = 0 , 44 Relatiewe frekwensie van S = frekwensie van uitkoms aantal proewe = 56 100 = 0 , 56

    Die relatiewe frekwensie van die muntstuk gooie om kop te lewer is 0,44 en die relatiewe frekwensie om stert te lewer is 0,56.

Bepaal die waarskynlikheid van 'n regverdige muntstuk om op enige kant te land.

  1. Daar is twee unieke uitkomste: K en S.

  2. Daar is twee moontlike uitkomste.

  3. Relatiewe Frekwensie van K = aantal gunstige uitkomste totale aantal uitkomste = 1 2 = 0 , 5 Relatiewe Frekwensie van S = aantal gunstige uitkomste totale aantal uitkomste = 1 2 = 0 , 5

    Die waarskynlikheid van 'n regverdige muntstuk om op enige kant te land is 0,5 .

Projek idee

Voer 'n eksperiment uit wat wys dat die relatiewe frekwensie die waarskynlikheid van 'n gegewe uitkoms benader soos wat die aantal proewe toeneem. Doen 10, 20, 50, 100 en 200 proewe van die gooi van 'n muntstuk.

Interpretasie van waarskynlikheidswaardes - (nie in caps, maar ingesluit vir volledigheid)

Die waarskynlikheid van 'n gebeurtenis word dikwels uitgedruk as 'n reële getal tussen 0 en 1, ingesluit. Waar 'n onmoontlike waarskynlikheid deur 0 en 'n versekerde waarskynlikheid deur 1 voorgestel word. Tog is 0 waarskynlikheid gebeure nie altyd onmoontlik nie, terwyl 1 waarskynlikheid gebeure nie altyd verseker is nie. Hierdie subtiele verskil tussen seker en waarskynlikheid 1 word verder bespreek in die gedeelte "amper seker".

Questions & Answers

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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
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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