Odds:
Odds are the chances which are measured but it cannot be mathematically calculated. Odds against reflect the likelihood that a particular event will not take place.
Probability:
Probability is the assumption done in mathematical using an equation. It is quantified as a number between 0 and 1 (where 0 indicates impossibility and 1 indicates certainty).
Differences:
Basis | Odds | Probability |
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Definition (www.oxforddictionaries.com) |
The ratio between the amounts staked by the parties to a bet, based on the expected probability either way. | The quality or state of being probable; the extent to which something is likely to happen or be the case. |
Synonyms | Allowance, benefit, disparity, start | Expectation, possibility, hazard, anticipation |
Antonyms | Disadvantage, similarity, sameness, likeness, equality | Certainty, unlikelihood, reality, improbability |
Pronunciation |
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History | The language of odds such as “ten to one” for intuitively estimated risks is found in the sixteenth century, well before the development of mathematical probability. | The scientific study of probability is a modern development. Gambling shows that there has been an interest in quantifying the ideas of probability for millennia, but exact mathematical descriptions arose much later. |
Word origin | The word odds were originated in circa 1520. | The word probability was originated in 15th century. |
Based on | Odds are based on the probability than an event will ever occur. | Probability is a mathematical measure of how often an event will occur. |
Measures | Odd measures the chances for and the chances against an event ever occurring. | Probability only measures the chances that an event will occur against the total number of times an even will occur. |
Ensures | Odds are used to find out if an event will ever occur. | Probability ensures that an event will occur. |
Expressed | Odds is expressed as a ratio. | Probability is expressed as a number between 0 and 1. |
Example in Sentence |
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