Every six months, doug is asked to fill out a survey asking when he expects to buy a new vehicle and what type and model he plans to purchase. doug, along with a group of consumers with similar buying habits, has been participating in this survey for the last eight years. the gathering of this quantitative data is an example of descriptive research using

a longitudinal design

Explanation:

The survey being filled by the customers are used to gain a better understanding of how the customer is feeling about the new car and how does this change over time. With the help of this knowledge the car manufacturer can incorporate changes in the future.

This type of survey is called a longitudinal study i.e., observations taken over a period of time.

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