Moderate
For a certain distribution if ∑(x−2)=18,∑(x−24)=0,∑(x−28)=−24) then arithmetic mean is_______________?
Correct answer: B. 24
- A. 21
- B. 24
- C. 28
- D. 0
Explanation
Because ∑(x − 24) = 0, 24 is the arithmetic mean, using the property that deviations from the mean sum to zero. The other supplied sums are consistent with the same mean when the number of observations is positive.
Last updated
Practise Descriptive Statistics
238 free Descriptive Statistics MCQs from Statistics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Statistics questions like this
Statistics is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.