Which type of questions are often used in surveys to obtain clear data?

Closed-ended questions are often employed in surveys to obtain clear and quantifiable data. These types of questions provide respondents with specific options to choose from, such as "yes" or "no," or a set of multiple-choice answers. This structure facilitates the collection of straightforward data that can be easily analyzed and compared across respondents, making it ideal for statistical purposes and ensuring consistency in responses.

The clarity and structure of closed-ended questions help reduce ambiguity, allowing researchers to gather precise information and draw firm conclusions from the responses. This is particularly useful when the objective is to measure the prevalence of certain opinions or behaviors among a population.

In contrast, other question types, such as open-ended questions, may invite diverse and nuanced responses but can lead to complications in data analysis due to their subjective nature. Descriptive questions and qualitative questions, while valuable for certain types of research, do not lend themselves as effectively to straightforward data collection and analysis as closed-ended questions do.