Final answer:
The main point of the reading on algorithmic bias in marketing is that biased training data is a major source of algorithmic bias.
Step-by-step explanation:
The main point of the reading on algorithmic bias in marketing is that biased training data is a major source of algorithmic bias. Algorithms used in marketing can be unintentionally biased due to the data they are trained on. For example, if a dataset used to train an algorithm contains biased information, such as historical data that reflects existing discrimination or social biases, the algorithm may produce biased results.