A frequent food questionnaire (FFQ) is used to gather nutritional information on

Question

A frequent food questionnaire (FFQ) is used to gather nutritional information on people. It typically is a one-time assessment of a person's typical diet. A study examined the accuracy of a FFQ by randomly selecting a group of subjects who were asked to keep a detailed food diary (DR). The investigators then used the answers from the FFQ to predict the actual consumption of certain foods such as dietary fats. The answer from the food diary is a response The answer from the FFQ is a response The answer from the FFQ is an explanatory variable. The answer from the food diary is a response, and the answer from the FFQ is an explanatory variable.

Explanation / Answer

As the response variable is the focus of a question, which provides the answer. and explanatory variable is that which explains the changes.

In our question, in food diary keeps the answer of the FFQ means it is response. and after food diary using FFQ it provides explaination about the response.

The answer from the food diary is a response , and the answer from the FFQ is an explanatory variable.

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