What is probability?
Simple Probability 7th grade

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•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1, where 0 means the event will not occur and 1 means it will certainly occur.
2.
FLASHCARD QUESTION
Front
What is the formula for calculating probability?
Back
The probability of an event is calculated using the formula: P(Event) = (Number of favorable outcomes) / (Total number of outcomes).
3.
FLASHCARD QUESTION
Front
What is the probability of pulling a red marble out of a jar with 10 green, 7 red, and 3 blue marbles?
Back
P(Red) = 7 / (10 + 7 + 3) = 7 / 20 = 0.35 or 35%.
4.
FLASHCARD QUESTION
Front
What is the probability of selecting a brown M&M from a bowl with 4 yellow, 6 orange, 2 brown, 3 green, and 5 blue M&Ms?
Back
P(Brown) = 2 / (4 + 6 + 2 + 3 + 5) = 2 / 20 = 1/10.
5.
FLASHCARD QUESTION
Front
What is the range of probability values?
Back
Probability values range from 0 to 1.
6.
FLASHCARD QUESTION
Front
What does a probability of 0 mean?
Back
A probability of 0 means that the event cannot occur.
7.
FLASHCARD QUESTION
Front
What does a probability of 1 mean?
Back
A probability of 1 means that the event will certainly occur.
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