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b) Gooi nou die dobbelsteen 15 keer. Teken die aantal kere wat die 3 bo lê as die dobbelsteen val, aan (maak ’n regmerkie).

Skryf jou antwoord as ’n breuk met noemer 15. _____________________________________________________________________

Is jou antwoord na aan een sesde? (gebruik jou sakrekenaar) ___________________

Kan jy dit verklaar? __________________________________________________

_____________________________________________________________________

20.5 Het jy geweet?

Dit sou blote toeval wees, indien jy ’n waarskynlikheid van een sesde hierbo gekry het! Die eksperimentele waarskynlikheid is gebaseer op dit wat jy werklik gedoen het. Die teoretiese waarskynlikheid is net ’n poging om te voorspel wat sal gebeur.

Hoe meer kere jy die dobbelsteen gooi, hoe nader behoort die praktiese en teoretiese waarskynlikheid aan mekaar te wees.

20.6 BRAINTEASER

  • What is the probability that you will get 7, if you throw two dice at the same time and add the numbers that are showing upwards?

_____________________________________________________________________

_____________________________________________________________________

21. Tyd vir selfassessering

  • Kleur die gesiggie in wat waar is van jou:
Ek kan die begrip “waarskynlikheid” verduidelik
Ek weet wat ’n waarskynlikheid van 0 beteken
Ek weet wat ’n waarskynlikheid van 1 beteken
Ek weet wat die “formule” is om waarskynlikheid te bepaal
Ek kon die waarskynlikheid in die gegewe vrae hierbo korrek bereken

22. Vir die PRET!

  • Gebruik die gegewe koördinate en ontsyfer die kode!

(9,9) (9,2) (1,10) (1,10) (3,2) (1,0) (6,10) (2,6)

............................................ .........................

(4,1) (3,2) (1,10) (1,10) (5,8) (8,5) (6,10) (1,2) (6,10)

............................................ ......................................

(8,5) (6,10) (1,2) (1,8) (8,5) (9,9) (3,8) (9,1) (5,8) (6,10)!!

................. ......................................................................!!

Assessering

Leeruitkomste 5: Die leerder is in staat om data te versamel, op te som, voor te stel en krities te ontleed om gevolgtrekkings en voorspellings te maak en om toevallige variasie te interpreteer en te bepaal.

Assesseringstandaard 5.9: Dit is duidelik wanneer die leerder data wat op verskeie maniere voorgestel is krities lees en interpreteer ten einde gevolgtrekkings en voorspellings te maak wat sensitief is

Assesseringstandaard 5.10: Dit is duidelik wanneer die leerder eenvoudige eksperimente uitvoer waarvan die moontlike uitkomste ewe waarskynlik is.

Module toets

1. Verklein die padda tot ’n skaal 2:1.

(3)

2. Watter soort transformasie is in die volgende figuur gebruik?

_____________________________________________

(1)

3. Verduidelik die volgende begrippe:

a) steekproef: ____________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

b) waarskynlikheid: ________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

4. Kyk na die volgende:

’n Groep leerders se punte uit 15 was soos volg:

6; 11 ; 12 ; 15 ; 9 ; 10 ; 10 ; 10 ; 8 ; 15

a) Bereken die modus: _____________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

b) Bereken die mediaan: _____________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

c) Bereken die rekenkundige gemiddelde:______________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

5. Kyk na die grafiek en beantwoord die volgende vrae:

a) Wat word hierdie soort grafiek genoem?

_____________________________________________________________________

(1)

b) Waarom “spring” die grafiek van 0 na 6?

_____________________________________________________________________

_____________________________________________________________________

(1)

c) Hoeveel leerders is 7 jaar oud?

_____________________________________________________________________

(1)

d) Hoeveel meer leerders is 9 jaar oud as 12 jaar oud?

_____________________________________________________________________

(1)

e) Hoeveel leerders is daar altesaam in die skool?

_____________________________________________________________________

(1)

6. Stel die inligting soos gegee by nr. 4 op ’n lyngrafiek voor.

(3)

7. Wat is die waarskynlikheid dat jy ’n swart bal sal uithaal in ’n houer met 12 rooi, 6 groen, 4 swart, 2 geel en 8 blou balle?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

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
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Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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