The term that is used to describe the type of survey and also what is wrong with the type of sampling method.
The term that is used to describe this type of survey is voluntary response sample.
The wrong that can be identified with this type of sampling method is that these responses may not be reflected by the overall behavior of the population.
The given information is that the question posted in a website by ‘U.S today’ is ‘How often do you seek medical information online?’, only 38% of the internet users have responded with ‘frequently’ out of 1,072 Internet users.
Voluntary response sample:
The voluntary response sample is a sample in which the respondents participate in the study by themselves. It is also termed as a self-selected sample.
In this survey, the internet users (respondents) have themselves participated based on their own interest. This implies that the respondents have voluntarily decided to respond in the survey.
Thus, the term that describes this type of survey is voluntary response sample.
If the respondents participate in the study voluntarily, these results do not generalize the overall behavior of the general population. That is, voluntary response sample is not a good representative of the population. Hence, this type of sampling method is not preferable.