• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • You already know Dokkio is an AI-powered assistant to organize & manage your digital files & messages. Very soon, Dokkio will support Outlook as well as One Drive. Check it out today!



Page history last edited by NolanTomboulian 3 years, 11 months ago

<Math By Lesson Topic>

<Return to Main Menu>

<6th Grade>

<7th Grade>

<8th Grade>

<Math Worksheets>


Kahn Academy Topic Videos:




PROBABILITY is a mathematical Model used to predict future outcomes (EVENTS) based on prior (or expected) results.

Probability is most oven expressed as a Decimal between ZERO (0) never happen and ONE (1) certainly will happen.
Decimals may also be expressed as a fraction: (Event / Total Outcomes)
Decimals can also be expressed as PERCENT:
1/2 = .5 = 50%

Theoretical Probability

is that given a "FAIR" tool, the outcomes can be predicted.

There are 6 sides on a Die: the probability of getting any number is "1/6"
The probability of getting an EVEN P(2, 4, 6) is 3/6 or 1/2 or .5 or 50%

There are 2 sides to a Coin: The probability of getting Heads or Tails is "1/2".

There are 52 cards in a DECK: the probability of getting an ACE is 4 out of 52 or 4/52 = 1/13 = .0769 or 7.69%

Experimental Probability

Based on an "Experiment", predict the future based on the past outcomes.
The greater number of "SAMPLES", the closer your experiment should approximate the Theoretical Probability.
If you "toss" a fair coin 10 times it is possible for it to be HEADS all ten times (but very unlikely)!

SPINNER Simulation Use this on-line Spinner with various defaults (or customize it) for Experimental Probability


Sample SimulationExperimental OUTCOME With Spinners: Experimental Spinners
An Experiment With 1 Die
An Experiment With 2 Dice

Probability Quiz








Comments (0)

You don't have permission to comment on this page.