Probability terminology
Basic Probability
Relative Frequency
Expectation
Probability Potluck
100
What word is associated with a probability of 0
impossible
100
the probability of rolling a 2 (give answer as a fraction)
1/6
100
From a Doctors survey, "84% of smokers have tried to quit"
What is the probability that someone who smokes does not want to quit?
16%
100
Relative frequency of rolling a 6 on a biased dice is 1/4.
How many 6's should I expect from 40 rolls?
10
100
Given a 4 color spinner with equal parts (red, blue, yellow, green) what is the probability of spinning red?
1/4 or 25%
200
What word is associated with a probability of 1
certain
200
Probability of an even number or a 1
2/3
200
How do you improve an estimate of relative frequency?
More trials
200
From this data, how many green would I expect to get from another 36 trials?
0
200
You have a bag of 12 marbles, four red and five green, the rest yellow. What is the probability of choosing yellow?
3/12
300
The experiment carried out (eg rolling a dice) is called an
event
300
If I have cards numbered 1-10, what is the probability of getting a prime number?
4/10=2/5
300
What's the relative frequency of getting a grade 4?
2/16 = 1/8
300
From this data, how many oranges would I expect to get from another 36 trials?
9
300
Most likely outcome for the bag of counters
red
400
The options from the experiment are called
outcomes
400
If I have cards labelled 1-10, what's the probability of getting a number that's even or bigger than 6?
7/10
400
What's the relative frequency of passing (at least a 4)?
1/2
400
From this data, suggest 2 colours which I would expect to occur 50% of the time?
purple and blue,
or pink and orange
400
Are you more likely to choose a vowel from the letters in CHANCE or PROBABILITY? Show your working!
Chance: 2/6
Probability: 4/11
Higher in probability
500
Probability from an experiment is called
relative frequency
500
Probability of picking a consonent from the letters in PROBABILITY
7/11
500
When conducting an experiment where you roll 2 dice and add the answers, what would you expect the score with the highest relative frequency to be?
7
500
If I spun this spinner 96 more times, how many times would I expect to land on a primary colour?
60
500
Are you more likely to get blue from the counters or spinner? Show your method!
Spinner (25%)
Counters (2/11)