Standardized tests can be used as a data collection tool for descriptive studies, which aim to describe the characteristics of a population or a group of individuals. These tests can provide quantitative data on participants' performance or abilities in a specific area, such as reading or math proficiency. Researchers can use the results of standardized tests to describe the abilities or performance of the population or group being studied.

However, it is important to keep in mind that a standardized test is not always the best tool for collecting data for a descriptive study, especially if the research question is not related to abilities or performance in the specific area being tested, or the population being studied is not representative of the population the test is standardized. Additionally, The results of a standardized test should not be used as the sole indicator of individual's ability, they should be complemented by other data collection tools like interviews, observation and questionnaires.