Correct Answer: Option B

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
=\(\frac{340}{20}\)

= 17

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