What is/are the major factor(s)affecting the strength of a conclusion?

Question

Quizplus · Accepted Answer

Sample size is a major factor affecting the strength of a conclusion because a larger sample is more representative of the population and reduces the chances of errors due to chance. The type of study carried out also affects the strength of a conclusion since different types of studies have different strengths and limitations. Therefore, both A and D are major factors affecting the strength of a conclusion.

What Is/are the Major Factor(s)affecting the Strength of a Conclusion