Question
upstudy study bank question image url

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

Ask by Daniel Ball. in Guyana
Mar 15,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The mean score is 15.

Solution

Sign in to Unlock Answers for Free!

A Learning Platform Trusted by Millions of Real Students and Teachers.

star-icon Unlock

Answered by UpStudy AI and reviewed by a Professional Tutor

Beyond the Answer

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!

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy