An online marketing analytics firm is evaluating different modeling techniques for various data sets. Identify which of the following scenarios are best suited for a non-linear model like MARS:
- 1. Forecasting sales for a new product line where the relationship between sales and marketing channels is complex and interactive.
- 2. Analyzing customer satisfaction scores where scores plateau after a certain level of service enhancements.
- 3. Predicting online ad conversion rates based on linearly increasing monthly ad spend data.