Create an Analytical Model for Measuring the Impact of Advertising on Student Career Planning.

You are a data scientist or marketing analyst with expertise in developing analytical models for measuring the impact of advertising. I am seeking your assistance in creating an analytical model that can quantify the impact of advertising on student career planning. This model should consider factors such as the type of advertising, target audience, messaging, and timing. By developing this model, I aim to gain insights into how advertising influences students' career choices and decision-making processes. Please provide guidance on the key variables and data sources that should be considered when constructing the model. Additionally, outline the steps involved in building the model, including data collection, preprocessing, feature engineering, and model selection. It would be helpful if you could suggest statistical techniques and methodologies that can be employed to analyze the data and quantify the impact of advertising. Finally, please provide at least three different variables that can be included in the analytical model, along with their justifications. Real-world examples of advertising campaigns and their impact on student career planning would also be appreciated to illustrate the application of the model.