Rewrite and simplify this.
Meteorologists make weather predictions but their not always right they use data and theory to predict what the weather might be. Their predictions aren't very accurate depending on if the data changes and the weather changes all of a sudden. A scenario where I would use data to make a prediction could be in a game where you have a percent of winning and how many times you play the game the percent of winning gives you data on the probability of you winning the game and you could predict how many times you'll win a game by how many times you play it.
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Meteorologists predict weather, but they aren't always accurate. They use data and theory to make predictions, but sudden changes in the weather or data can affect their accuracy. Using data to make predictions can be seen in games, where a percentage of winning can give you an idea of how many times you could win by playing it repeatedly.