Estimating Probabilities from Experiments (Leaving Cert Mathematics): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
When should experimental probability be used?
When should experimental probability be used?
When outcomes are not equally likely
What is the formula for relative frequency?
What is the formula for relative frequency?
What does relative frequency provide?
What does relative frequency provide?
An estimate of probability
According to the law of large numbers, what happens as trials increase?
According to the law of large numbers, what happens as trials increase?
Relative frequency approaches true probability
In a complete probability distribution, what must all probabilities sum to?
In a complete probability distribution, what must all probabilities sum to?
1
What is the formula for expected frequency?
What is the formula for expected frequency?
Probability number of trials
If 16 out of 100 cars are blue, what is the relative frequency of blue cars?
If 16 out of 100 cars are blue, what is the relative frequency of blue cars?
How can the reliability of probability estimates be improved?
How can the reliability of probability estimates be improved?
Increase the sample size
If probabilities are 0.1, 0.2, 0.3, 0.2, and , and they sum to 1, what is ?
If probabilities are 0.1, 0.2, 0.3, 0.2, and , and they sum to 1, what is ?
0.2
If P(six) = 0.3 and a dice is thrown 300 times, how many sixes are expected?
If P(six) = 0.3 and a dice is thrown 300 times, how many sixes are expected?
90
Which trial count gives the most reliable results: 30, 100, 150, or 300?
Which trial count gives the most reliable results: 30, 100, 150, or 300?
300 trials
If probability of a blue disc is , how many blues expected in 50 draws?
If probability of a blue disc is , how many blues expected in 50 draws?
20