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Grade 11 IB Math Studies - 2. Probability
Transcript of Grade 11 IB Math Studies - 2. Probability
Using trials of an experiment to estimate probability of future outcomes
Number of Trials:
Number of times an experiment is repeated
All possible results of the experiment
The number of times an outcome occurs
Frequency divided by number
Investigation: Pin Toss
Tossing two pins simultaneously
One up, one down
MORE TRIALS = MORE ACCURATE
Probability that can be calculated exactly without experiments
- the probability of event A happening
Probabilities can take values from 0 to 1, with 0 being and 1 being .
total possible outcomes
If you roll a six sided die, what is the probability of rolling an even number?
is the set of
all possible outcomes
We have 4 ways to visually represent sample space:
Example: Sample Space
Represent the sample space of tossing a coin and rolling a die using:
a) a list
b) a 2D Grid
c) a Tree Diagram