Relative Frequency and Carrying out Experiments (Leaving Cert Mathematics): Quizzes

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Relative Frequency and Carrying out Experiments
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What is relative frequency?

Proportion of times event occurs in trials

What is the formula for relative frequency?

Event occursTotal trials\frac{\text{Event occurs}}{\text{Total trials}}

What is relative frequency used to estimate?

Probabilities

What happens to relative frequency as trials increase?

It approaches the true probability

A die is rolled 6060 times and '33' appears 1515 times. What is the relative frequency?

0.250.25

A relative frequency of 0.250.25 is equivalent to what percentage?

25%25\%

What is the first step when carrying out an experiment?

Define the event of interest

Why should experiments be repeated?

To reduce random variation effects

What does the Law of Large Numbers state?

Relative freq. converges to theoretical prob.

An event occurs 3030 times in 120120 trials. What is the relative frequency?

0.250.25

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