The Basics of Probability (Junior Cert Mathematics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is relative frequency used to estimate?
What is relative frequency used to estimate?
Probability of an event
What is the formula for relative frequency?
What is the formula for relative frequency?
Event count ÷ total trials
In the relative frequency formula, what does the numerator represent?
In the relative frequency formula, what does the numerator represent?
How many times the event happens
In the relative frequency formula, what does the denominator represent?
In the relative frequency formula, what does the denominator represent?
Total number of trials
A die is rolled 20 times and shows a three times. What is the relative frequency?
A die is rolled 20 times and shows a three times. What is the relative frequency?
If the relative frequency of rolling a is , what is this as a percentage?
If the relative frequency of rolling a is , what is this as a percentage?
15%
What is the true probability of rolling a on a fair die?
What is the true probability of rolling a on a fair die?
About 16.7%
If it rained on 20 out of 52 weekends, what is the relative frequency?
If it rained on 20 out of 52 weekends, what is the relative frequency?
About 38%
What happens to the estimate as you increase the number of trials?
What happens to the estimate as you increase the number of trials?
It becomes more accurate
When is relative frequency particularly useful?
When is relative frequency particularly useful?
When probability is hard to calculate