CBSE Class 9 Maths Statistics MCQs

Question: The mean of 13 observations is 14. If the mean of the first 7 observations is 16 and that of the last 7 observations is 12, then the 7th observation is ______. (A) 12 (B) 14 (C) 16 (D) 18 Answer : B Question: The mean of ten items is p and if each…