Multiple Choice
In basic probability, what is the probability of an event that is certain to occur?
4. Probability
Basic Concepts of Probability
Multiple Choice
Which statement best describes probability in the context of basic probability theory?
A
A count of how many times an event occurs, which must always be an integer greater than or equal to .
B
A guarantee that a random event will occur as long as it has been observed at least once in the past.
C
A measure of the average size of outcomes in a sample, expressed in the same units as the data.
D
A numerical measure between and that quantifies the likelihood of an event occurring, with meaning impossible and meaning certain.
Verified step by step guidance1
Understand that probability is a numerical measure that quantifies how likely an event is to occur.
Recall that probability values range between 0 and 1, where 0 means the event cannot happen and 1 means the event is certain to happen.
Recognize that probability is not a count of occurrences, but rather a measure of likelihood.
Note that probability does not guarantee an event will happen just because it has happened before; it only expresses the chance of occurrence.
Conclude that the best description of probability is: a numerical measure between 0 and 1 that quantifies the likelihood of an event occurring.
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