Question: First - The local weather forecaster has predicted a 50% chance of rain on Saturday and a 50% chance of rain on Sunday. A friend who is watching the news with you concludes there is a 100% chance of rain for the weekend. How would you go about explaining the error in their reasoning?

Answer this question as if your friend is not familiar with data analysis techniques and avoid technical jargon. Hint : Your friend may need to understand the concept of independent events