📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • ✖

      Question

      The mean of 12 observations is 15. One more observation

      is included and the new mean becomes 16. The 13th observation is
      A 20 Correct Answer Incorrect Answer
      B 24 Correct Answer Incorrect Answer
      C 26 Correct Answer Incorrect Answer
      D 28 Correct Answer Incorrect Answer

      Solution

      The mean of 12 observations=15 Total =15×12=180 After including the new observations =12+1=13 New mean =16 Then total=16×13=208 13th observations =208-180=28. 

      Practice Next

      Relevant for Exams:

      ask-question