Question

if mean of 10,12,18,13,p and 17 is 15 .then find the value of p

Answer 1

Step-by-step explanation:

$\tt Mean = \dfrac{Sum\ of\ observation}{Number\ of\ Observation}$

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• $\sf Mean = 15$
• $\sf Sum\ of\ Observation = 10+12+18+13+p+17$
• $\sf Number\ of\ Observation = 6$

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$\tt 15 = \dfrac{10+12+18+13+p+17}{6}$

$\tt 15×6 = 70 + p$

$\tt 90 = 70 + p$

$\tt p = 90 - 70$

$\tt p = 20$