Explanation:
Probability is the ratio between number of successes to all events.
Probability = success / events
Odds are the ratio between number of successes to number of failures.
Odds = success / failure
If event A has a probability of 0.98, then there are 98 successes per 100 events, which means there are 98 successes per 2 failures. The odds of event A are 98/2 = 49/1.
If event B has a probability of 0.95, then there are 95 successes per 100 events, which means there are 95 successes per 5 failures. The odds of event B are 95/5 = 19/1.
The odds are relatively far apart compared to the probabilities. They make it seem that event A is much more likely than B, when in reality they have about the same probability.