Description: A good sample must represent all the characteristics of the population. Take a real-life example and explain why it is necessary? If it is not true, what can happen? Refer Chapter-5 Policy: Student must apply Saudi Electronic University academic writing standards and APA style guidelines. Support your submission with course material concepts, principles, and theories from the textbook along with at least two scholarly, peer-reviewed journal articles. A mark of zero will be given for any submission that includes copying from other resource without referencing it. Plagiarism percentage must very very low. At least 2 references.