Due to its low cost,the controlled experiment is the most commonly used method of collecting primary data for marketing research.

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The controlled experiment is not necessarily the most commonly used method for collecting primary data for marketing research. Other methods such as surveys, interviews, and observational studies may also be used depending on the research question and resources available. Additionally, the cost of a controlled experiment can vary depending on factors such as the complexity of the experiment and the sample size.

Due to Its Low Cost,the Controlled Experiment Is the Most