Theoretical Probability of Simple Events Explained

What is probability defined as?

• A method to solve equations

• A specific outcome of an event

• A measure of how likely an event is to occur

• A type of mathematical operation

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CCSS.7.SP.C.5

How is probability expressed?

• As a difference between possible and impossible events

• As a sum of all outcomes

• As a ratio of favorable outcomes to total outcomes

• As a percentage only

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CCSS.7.SP.C.5

What symbol is used to represent probability?

• E

• Prob

• R

• P

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CCSS.7.SP.C.5

Can probability be expressed as a decimal?

• No, it must be converted to a percentage first

• Yes, but only for certain events

• No, it can only be a fraction

• Yes, by dividing the numerator by the denominator

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CCSS.7.SP.C.5

What is the highest probability percentage possible?

• 75%

• 100%

• 200%

• 50%

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CCSS.7.SP.C.5

What does a probability of zero mean?

• The event is impossible to happen

• The event is unlikely to happen

• The event is likely to happen

• The event is certain to happen

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CCSS.7.SP.C.5

What term describes a probability of 1/2?

• Equally likely

• Unlikely

• Likely

• Certain

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CCSS.7.SP.C.5

Which of the following probabilities is considered 'likely'?

• 25%

• 50%

• 75%

• 0%

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CCSS.7.SP.C.5

What does it mean if an event is described as 'certain'?

• It cannot be determined

• It has a probability of 1 or 100%

• It has a probability of 0

• It has a probability of 1/2

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CCSS.7.SP.C.5

If a coin is flipped, what is the probability it lands on heads?

• 75%

• 50%

• 100%

• 25%

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CCSS.7.SP.C.5