What is probability?
Probability Review 9

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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 cannot happen and 1 means it will definitely happen.
2.
FLASHCARD QUESTION
Front
What is theoretical probability?
Back
Theoretical probability is the probability of an event calculated based on the possible outcomes in a perfect scenario, without any experimental data.
3.
FLASHCARD QUESTION
Front
How do you calculate the total number of Skittles in a bag?
Back
Add the number of Skittles of each color together. For example, Red (2) + Orange (3) + Purple (4) + Green (5) + Yellow (6) = 20 Skittles.
4.
FLASHCARD QUESTION
Front
What is the formula for calculating the probability of picking one Skittle?
Back
Probability = (Number of favorable outcomes) / (Total number of outcomes).
5.
FLASHCARD QUESTION
Front
If there are 20 Skittles in total, what is the probability of picking a Red Skittle?
Back
Probability of Red = Number of Red Skittles / Total Skittles = 2/20 = 1/10.
6.
FLASHCARD QUESTION
Front
What does 'and' mean in probability?
Back
In probability, 'and' refers to the joint probability of two events happening together, calculated by multiplying their individual probabilities.
7.
FLASHCARD QUESTION
Front
What is the probability of picking a Red then an Orange Skittle?
Back
Probability = (Probability of Red) * (Probability of Orange after Red is picked) = (2/20) * (3/19) = 6/380 = 3/190.
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