Analysis of information sources in references of the Wikipedia article "Kích cỡ dương vật người" in Vietnamese language version.
A sample that is not representative of the population to which generalizations are to be made. For example, a group of band students would not be representative of all students at the middle school, and thus would constitute a biased sample if the intent was to generalize to all middle school students.
|journal= (trợ giúp)|Author= (gợi ý |author=) (trợ giúp)[liên kết hỏng]|Author= (gợi ý |author=) (trợ giúp)[liên kết hỏng]A sample that is not representative of the population to which generalizations are to be made. For example, a group of band students would not be representative of all students at the middle school, and thus would constitute a biased sample if the intent was to generalize to all middle school students.