Twenty students each score a mark of 15 out of a maximum of 40 marks in a test. What is the mean score? a. 22.5 b. 15 Oc. 20 d. 30

To find the mean score, you add up all the scores and then divide by the number of students. In this case, if each of the 20 students scored 15, the total score would be 20 x 15 = 300. Dividing this total by the number of students (20) gives you a mean score of 300 / 20 = 15. So the correct answer is b. 15. Now, let’s say these students were taking a series of different tests. If they continued to score consistently around this mark, they might want to focus on specific areas of improvement. Developing a study plan or seeking feedback from teachers could greatly benefit them in assessing their knowledge gaps. Furthermore, if these students are curious about their statistical prowess, they could explore other statistical concepts like median, mode, and standard deviation. Understanding these can give them a more complete picture of their performance, and it can certainly add to their analytical skills!