Which of the following is an example of a binary prediction question?

In the context of prediction questions, a binary prediction question seeks to derive an outcome that has only two possible results. The example of predicting whether a customer will churn fits perfectly into this category because it involves determining one of two states: the customer will either stay with the service or they will leave. This type of question is fundamental in data analysis, where classifying outcomes into two distinct categories helps businesses strategize proactive measures for customer retention.

The other options presented involve forecasting with multiple potential outcomes or numerical predictions. For instance, asking what a customer might purchase entails a range of possibilities rather than a yes/no scenario. Similarly, predicting how much revenue a sale will generate and estimating the duration of a project both involve continuous variables with numerous potential outcomes. These are not binary in nature, as they cannot be reduced to just two distinct options.