Weather Predictions (Grade 10 NSC Matric Mathematical Literacy): Flashcards
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Probability formula
Probability formula
rac{ ext{Favourable outcomes}}{ ext{Total outcomes}}
What 60% chance of rain represents
What 60% chance of rain represents
Probability based on historical weather data
Complementary probabilities total
Complementary probabilities total
100%
If 60% rain probability, probability of no rain
If 60% rain probability, probability of no rain
40%
Database definition
Database definition
Organised collection of information collected over time
Meaning of 50% probability
Meaning of 50% probability
Equal chance of occurring or not occurring
Probability greater than 50% means
Probability greater than 50% means
Event is more likely to happen
Probability less than 50% means
Probability less than 50% means
Event is less likely to happen
Weather forecasts are based on
Weather forecasts are based on
Mathematical predictions from historical data, not guarantees
60 rainy days out of 100 similar days gives probability
60 rainy days out of 100 similar days gives probability
rac{60}{100} = 0.60 or 60%