Given that ∑fx = 340 and N = 20, find the arithmetic mean.
ECONOMICS
JAMB 2017
Given that ∑fx = 340 and N = 20, find the arithmetic mean.
- A. 20
- B. 17
- C. 32
- D. 9
Correct Answer: B. 17
Explanation
Arithmetic mean, x̄= ∑fx n where: x̄= Arithmetic mean ∑ = sum of X = series of figures in a given data f = nunmber of times a particular number occurs (frequency) n = number of figures or element From the question: Since, x̄= ∑fx N Then, x̄= ∑fx N =340/20 = 17
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *