Question
∑fx = 5x + 2, ∑f = 12. If the mean of the distribution is 6, what is the value of x?
Answer: Option B
:
B
We know Mean = ∑fx∑f
Hence, 5x+212 = 6
⇒ 5x + 2 = 12 ×6
⇒ 5x = 72 – 2 = 70
⇒ x = 14
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:
B
We know Mean = ∑fx∑f
Hence, 5x+212 = 6
⇒ 5x + 2 = 12 ×6
⇒ 5x = 72 – 2 = 70
⇒ x = 14
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